Datasets:
mgatti
/
MNLP_M3_mcqa_dataset

Dataset card Data Studio Files
xet
Community
1
question
string
choices
list
answer
string
rationale
string
dataset
string
The distance between Delhi and Mathura is 110 kms. A starts from Delhi with a speed of 20 kmph at 7 a.m. for Mathura and B starts from Mathura with a speed of 30 kmph at 8 p.m. from Delhi. When will they meet?
[ "9.48 a.m.", "40.00 a.m.", "18.00 a.m.", "10.00 a.m." ]
A
D = 110 – 20 = 90 RS = 20 + 30 = 50 T = 90/50 = 1 hours 48 minutes 8 a.m. + 1 hours 48 minutes = 9:48 a.m.
aqua_rat
Commonest site for volvulus is?
[ "Caecum", "Stomach", "Proximal jejunum", "Sigmoid colon" ]
D
Sigmoid colonREF: Schwarz 8th ed p-1098, Sutton's 7th ed p-677, Sabiston 16th ed p-1422, Maingot's 10deg' ed p-1404"Most common site of volvulous is the colon. In colon sigmoid colon is the most common site of volvulous"Volvulous:Twisting of one segment of intestine on an axis formed by its mesentry # Results in partial of complete intestinal obstructionPlain radiography of volvulous shows :Large inverted U shaped loop of massively distended sigmoid colon emerging from the pelvis, k/a bent inner tube sign or coffee bean sign.Absence of haustraApex of loop under diaphragmContrast with gastrografhn showrs bird of prey or bird's beak sign
medmcqa
A bag contains 4 white balls, 3 black balls, and 2 red balls. One by one, three balls are drawn out without replacement. What is the probability that the third ball is red?
[ "5/16", "2/9", "3/8", "1/4" ]
B
The probability for each ball to be drawn third is equal. Then the probability a red ball is drawn third is 2/9.
aqua_rat
What is the transition from liquid to gas is called?
[ "freezing", "condensing", "boiling", "melting" ]
C
The liquid to gas transition is called boiling.
sciq
In a 70-Kg adult, the volume of intracellular fluid would be
[ "5 L", "14 L", "28 L", "12 L" ]
C
ICF volume = (0.4) X body weight. =0.4x 70 =28L
medmcqa
A movie buff buys movies on DVD and on Blu-ray in a ratio of 13:4. If she returns 2 Blu-ray movies, that ratio would change to 7:2. If she buys movies on no other medium, what was the original number of movies purchased?
[ "77", "119", "22", "28" ]
B
Now coming to the process m(D) = 13x and b(D) = 4x now from the next line the new eqn becomes 13x/ (4x -2) = 7/2 Solving it 26x = 28x -14 x =7 which means m (d) = 91 and b(d) = 28 SO total initially is m(d) + b(d) = 119
aqua_rat
A can do a half of certain work in 70 days and B one third of the same in 35 days. They together will do the whole work in?
[ "1/63", "1/62", "1/60", "1/65" ]
C
A = 140 days B = 105 days 1/140 + 1/105 = 7/420 = 1/60 =>60 days
aqua_rat
What makes up the dense outer layer of bones?
[ "scales", "marrow", "compact bone", "cartilage" ]
C
Compact bone makes up the dense outer layer of bones.
sciq
Hot Cross Bun Sign on MRI is seen in-
[ "Progressive supranuclear palsy", "Multisystem atrophy", "Lewy body dementia", "Alzeihmer's disease" ]
B
* HOT CROSS BUN SIGN - cross shaped hyperintensity in the center of pons * It is a classic feature of Multisystem atrophy type - C * Multisystem atrophy type - c has involvement of pontocerebellar pathway Figure: hot cross bun sign - MSA-C Figure showing Humming bird sign in Progressive supranuclear palsy. Figure showing Mickey-Mouse sign in Progressive supranuclear palsy.
medmcqa
A cylinder of height h is 6/7 of water. When all of the water is poured into an empty cylinder whose radius is 25 percent larger than that of the original cylinder, the new cylinder is 3/5 full. The height of the new cylinder is what percent of h?
[ "25%", "50%", "70%", "60%" ]
C
Basically we can disregard the radius is 25% information, as we are only asked about the height of the original and the new cylinder. This is becausethe new cylinder is 3/5 fullmeans the same as that it's height is 3/5. Original cylinder 6/7 New cylinder 3/5 So 3/5/6/7 = 3/5*7/6= 0.70 or 70%.
aqua_rat
A dishonest dealer professes to sell goods at the cost price but uses a weight of 850 grams per kg, what is his percent?
[ "45%", "29%", "55%", "17%" ]
D
850 --- 150 100 --- ? => 17.64%
aqua_rat
Oolani test is positive when the examiner hears the ?
[ "Click of exit on abduction and flexion of hip", "Click of exit on extension and adduction of hip", "Clunk of entry on abduction and flexion of hip", "Clunk of entry on extension and adduction of hip" ]
C
Clunk of entry on abduction and flexion of hip Clinical tests for CDH/DDH In infancy two tests are used. Barlow's test This test is done within 2-3 days of bih. The test has two pas :? Pa 1 :- Infant is in supine position with hip and knee in 90deg of flexion, The hip is slowly adducted & pushed to dislocate the hip and one can hear a clunck of exit of femoral head out of the acetabulum. Pa 2 :- Now the hip is gentely abducted and pulled to reduce the hip. This will cause 'clunk' indicating reduction of hip. It is quite obvious that pa 1 can be done only dislocatable hip; but not in already dislocated hip as the head is already out of the acetabulum. Oolani's test This test is similar to 2nd pa of Barlow's test, i.e. slow abduction of hip in flexed position of hip & knee to reduce the hip.
medmcqa
A box held 20 blue marbles and 30 red marbles. One marble is drawn at random. What is the probability that the marble is red?
[ "3/5", "None of these", "1/4", "2/5" ]
A
Total cases = 20 + 30 = 50 Favourable cases = 30 So probability = 30/50 = 3/5
aqua_rat
A car is traveling 75 kilometers per hour. How many meters does the car travel in one minute?
[ "2,250 meters / minute", "4,250 meters / minute", "1,250 meters / minute", "6,250 meters / minute" ]
C
Convert hour into minutes ( 1 hour = 60 minutes) and kilometers into meters (1 km = 1000 m) and simplify 75 kilometers per hour = 75 km/hr = (75 * 1000 meters) / (60 minutes) = 1,250 meters / minute
aqua_rat
Triangle of Koch is the landmark for :
[ "SA node", "AV node", "Bundle of His", "Purkinje fibres" ]
B
Triangle of KochTriangular area in right atrium- Marks the site of AV NODEBoundaries- Anterior : Base of septal leaflet of tricuspid valve- Posterior : Anteromedial margin of opening of coronary sinus- Superiorly : Tendon of Todaro
medmcqa
The average score in an examination of 10 students of a class is 60. If the scores of the top five students are not considered, the average score of the remaining students falls by 5. The pass mark was 50 and the maximum mark was 100. It is also known that none of the students failed. If each of the top five scorers had distinct integral scores, the maximum possible score of the topper is
[ "98", "95", "99", "97" ]
C
The average score in an examination of 10 students of a class is 60 --> the total score = 10*60 = 600; The 5 smallest scores have an average of 55 --> the total score of the 5 smallest scores = 275. From above, the total score of the 5 largest scores = 600 - 275 = 325. Say the 5 largest scores are a, b, c, d, and e (where a<b<c<d<e, since each of the top five scorers had distinct scores). We want to maximize e. To maximize e, we need to minimize a, b, c, and d. The least value of a, is 55 (The least score of the top 5 , a, should be equal to the highest of the bottom 5 and to minimize the highest of the bottom 5, all scores from the bottom 5 should be equal). In this case the least values of b, c, and d are 56, 57, and 58 respectively: a + b + c + d + e = 55 + 56 +57 + 58 + e = 325; e = 99.
aqua_rat
x - y =2 2x = 2y + 4 The system of equations above has how many solutions?
[ "Exactly two", "Exactly three", "Infinitely many", "Exactly one" ]
C
x-y=2 ---------------1 2x=2y+4 ---------------2 Divide equation 2 by 2: 2x/2=(2y+4)/2 x=y+2 x-y=2----------------3 Equation 1 and 3 are equal and thus have infinitely many solutions: x-y=2 x=4, y=2 x=6, y=4 x=7, y=5
aqua_rat
What is a difference between mitosis and meiosis?
[ "Mitosis occurs in all the cells in animals and plants, while meiosis occurs in only in bacteria.", "In mitosis, the products are identical to the parent cell, while in meiosis the products are different from the parent cell.", "In mitosis, one cell divides into two cells, while in meiosis two cells combine to make one cell.", "Mitosis involves separating the chromosomes, while meiosis involves only the cytoplasm of the cell." ]
B
The correct answer highlights that mitosis produces two genetically identical daughter cells, maintaining the same chromosome number as the parent cell, while meiosis results in four genetically diverse gametes with half the chromosome number. The other options contain inaccuracies: A incorrectly states that meiosis occurs only in bacteria, C misrepresents the process of meiosis as combining cells instead of dividing, and D incorrectly suggests that meiosis does not involve chromosome separation.
ai2_arc_challenge
A 60 kg metal bar made of alloy of tin and silver lost 6 kg of its weight in the water. 10 kg of tin loses 1.375 kg in the water; 5 kg of silver loses 0.375 kg. What is the ratio of tin to silver in the bar?
[ "1/2", "2/5", "3/5", "2/3" ]
D
you can simply use this formula to avoid confusion: w1/w2 = (A2 - Aavg)/(Avg - A1) Here is how you will find the values of A1 an A2. We have an overall loss (average loss). The average loss is 6 kg when 60 kg alloy is immersed. This is a loss of (6/60)*100 = 10%. This is Aavg The loss of tin is 1.375 kg for every 10 kg. This means it loses (1.375/10)*100 = 13.75% of its weight in water. This is A1. The loss of silver is .375 kg for every 5 kg. This means it loses (.375/5)* 100 = 7.5% of its weight in water. This is A2. Weight of Tin/Weight of Silver = (Silver's loss - Avg loss)/(Avg loss - Tin's loss) X/Y = (7.5 - 10)/(10 - 13.75) = 2/3
aqua_rat
A horse in a field under the summer sun was glistening wet even though it hadn't rained.
[ "the other horses were licking that horse", "sweat glands released liquid to cool off the horse", "sweat glands dried up", "The horse needed a shower and was getting oily" ]
B
Horses sweat to regulate their body temperature, and the moisture observed on the horse's coat is a result of sweat evaporating, which helps cool the horse down in hot weather.
openbookqa
The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places)?
[ "178.26", "178.23", "178.29", "178.21" ]
C
Calculated average height of 35 boys = 180 cm. Wrong total height of 35 boys = 180 * 35 cm. This was as a result of an actual height of 106 cm being wrongly written as 166 cm. Correct total height of 35 boys = 180 * 35 cm - 166 cm + 106 cm = 180 * 35 cm - 166 cm + 106 cm/35 = 180 cm - 60 /35 cm = 180 cm - 1.71 cm = 178.29 cm.
aqua_rat
5 years old child presented with generalised edema and ascites there was no hypertension or hematuria Renal function tests were normal . Urinalysis revealed massive proteinuria . Most probable diagnosis is
[ "Post - streptococcal glomerulonephritis", "Membranous glomerulonephritis", "IgA nephropathy", "Minimal Change disease" ]
D
All the above features suggest Nephrotic syndrome Most common cause is Minimal Change disease.
medmcqa
A high school has 360 students 1/2 attend the arithmetic club, 5/8 attend the biology club and 3/4 attend the chemistry club. 3/8 attend all 3 clubs. If every student attends at least one club how many students attend exactly 2 clubs.
[ "40", "35", "50", "45" ]
D
Basically, this question is asking you to figure out how many students are being double-counted. A-Club has 180 members (1/2 of 360) B-Club has 225 members (5/8 of 360) C-Club has 270 members (3/4 of 360) We can create an equation to solve this: 180+225+270 = n + x + 2y where n is the number of students, x is the number of students in two clubs, and y is the number of students in three clubs. The question provides y for us (135). 180+225+270 = 360 + x + 270 x = 405-360 =45
aqua_rat
Excluding stoppages, the speed of a train is 30 kmph and including stoppages it is 21 kmph. Of how many minutes does the train stop per hour?
[ "16", "17", "12", "18" ]
D
T = 9/30 * 60 = 18
aqua_rat
Exogenous pyrogen is?
[ "IL-6", "Neurotropic factor", "TNF-a", "Lipopolysaccharide" ]
D
Lipopolysaccharide * Pyrogens may be exogenous or endogenousa) Exogenous - Bacterial toxins (eg: LPS)b) Endogenous-IL-1, TNF-a, IL-6, Interferons, Ciliory's neurotropic factor
medmcqa
12. What is the dividend. divisor 17, the quotient is 9 and the remainder is 7.
[ "158", "150", "160", "154" ]
C
D = d * Q + R D = 17 * 9 + 7 D = 153 + 7 D = 160
aqua_rat
Pericardial effusion is best diagnosed by: September 2009
[ "Angiography", "Chest X-ray", "Echocardiography", "ECG" ]
C
Echocardiography Echocardiography is the imaging modality of choice for the diagnosis of pericardial effusion. Most impoantly, the contribution of pericardial effusion to overall cardiac enlargement and the relative roles of tamponade and myocardial dysfunction to altered hemodynamics can be evaluated with echocardiography. Pericardial effusion appears as an "echo-free" space between the visceral and parietal pericardium. Early effusions tend to accumulate posteriorly owing to expandable posterior/lateral pericardium. Large effusions are characterized by excessive motion within the pericardial sac. Severe cases may be accompanied by diastolic collapse of the right atrium and right ventricle (and in hypovolemic patients the left atrium and left ventricle), signaling the onset of pericardial tamponade
medmcqa
Paralysis of 3rd, 4th, 6th nerves with involvement of ophthalmic division of 5th nerve, localizes the lesion to?
[ "Cavernous sinus", "Apex of orbit", "Brainstem", "Base of skull" ]
A
CN III, IV, V1, V2, and VI and postganglionic sympathetic fibers en route to the orbit all pass through the cavernous sinus.
medmcqa
A patient walking barefoot in morning walk has developed a swelling in the foot. Probable diagnosis is:
[ "Staphylococcus aureus", "Botryomycosis", "Tetanus", "Madura Foot" ]
A
Staphylococcus aureus.* Note the presence of Abscess on foot with central raised area of whitish pus surrounded by erythema which in most probability is caused by Staphylococcus aureus.* Botryomycosis (bacterial pseudomycosis) is an uncommon chronic bacterial infection of skin caused by masses of colonizing bacteria. Staphylococcus aureus is the usual cause, but a wide range of gram negative organisms have also been isolated. It presents with multiple grape like fluctuant lesions.* In madura foot, the initial lesion is a small subcutaneous swelling following minor trauma. Later, sinuses that discharge purulent and seropurulent exudates containing grains which are fungal colonies are formed.Image source- style="font-family: Times New Roman, Times, serif">
medmcqa
In what type of population do allele and genotype frequencies not change over time?
[ "saturation population", "shape population", "inequilibrium population", "equilibrium population" ]
D
In an equilibrium population, allele and genotype frequencies do not change over time.
sciq
A metal company's old machine makes bolts at a constant rate of 100 bolts per hour. The company's new machine makes bolts at a constant rate of 150 bolts per hour. If both machines start at the same time and continue making bolts simultaneously, how many minutes will it take the two machines to make a total of 450 bolts?
[ "36", "144", "108", "72" ]
C
Old Machine 100 bolts in 60 mins so, 5/3 bolts in 1 min New Machine 150 bolts in 60 mins so, 5/2 bolts in 1 min together, 5/3 + 5/2 = 25/6 bolts in 1 min so, for 450 bolts 450 * 6 / 25 = 108 mins
aqua_rat
At a particular pizza shop, a pizza can be created from any combination of 7 different types of spice, 7 different types of meat, among which are pepperoni and anchovies, and 4 different types of cheese. If a customer at the shop decides to order a pizza with 1 type of spice, 2 types of cheese, and 4 types of meat but without pepperoni and anchovies together, how many possible ways to garnish the pizza are available to the customer?
[ "1050", "6", "120", "450" ]
A
Number of possible ways to select 1 type of spice = 7c1 = 7 Number of possible ways to select 2 types of cheese = 4c2 = 6 Number of possible ways to select 4 types of meat but without pepperoni and anchovies together = Total number of ways without any restriction - Total number of ways in which pepperoni and anchovies together = 7c4 - 5c2 =35 - 10 =25 Possible ways to garnish the pizza are available to the customer = 7*6 * 25 =1050
aqua_rat
A cistern has a leak which would empty the cistern in 20 minutes. A tap is turned on which admits 5 liters a minute into the cistern, and it is emptied in 24 minutes. How many liters does the cistern hold?
[ "481", "480", "487", "600" ]
D
1/x - 1/20 = -1/24 x = 120 120 * 5 = 480
aqua_rat
2^2*3^3*2^3*3^2*2^2 =
[ "2^9*3^4", "3^5*2^5", "2^4*3^9", "5^8" ]
D
2^2*3^3*2^3*3^2*2^2 = A) 3^5*2^5 B) 2^9*3^4 C) 2^4*3^9 D) 2^7*3^5 E) 6^10 If the base is same, powers are added so that follows D) 2^7*3^5.
aqua_rat
In presence of secondary sexual characters cause screening for primary amenorrhea is done at
[ "14 years", "18 years", "12years", "16 years" ]
D
Primary amenorrhoea is defined as the absence of secondary sexual characters by 14 yrs of age or absence of menarche in the presence of secondary sexual characters till 16 yrs of age, In the sequence of pubeal development the changes are as follows thelarche, increased growth spu, pubarche, menarche. As menarche is the last stage ,in case secondary sexual characters have developed to account for constitutional delay investigation is begun at 16 years.
medmcqa
Which muscles is known as 'Triceps surae'
[ "Popliteus", "Gastro-soleus", "EHL", "EDL" ]
B
Gastro-soleus Gastrocnemius and soleus together (gastro-soleus) are known as triceps surae.Soleus is known as peripheral hea helping in venous return from lower limb
medmcqa
P , Q, R enter into a partnership & their share are in the ratio 1/2 : 1/3 : 1/4 , after two months , P withdraws half of the capitals & after 10 months , a profit of Rs 378 is divided among them . What is P's share?
[ "126", "114", "144", "None of these" ]
A
The ratio of their initial investment = 1/2 : 1/3 : 1/4 = 6 : 4: 3 Let's take the initial investment of P, Q and R as 6x, 4x and 3x respectively A:B:C = (6x * 2 + 3x * 10) : 4x*12 : 3x*12 = (12+30) : 4*12 : 3*12 =(4+10) : 4*4 : 12 = 14 : 16 : 12 = 7 : 8 : 6
aqua_rat
The superior vesical aeries are direct branches of the
[ "External pudendal aery", "Umbilical aery", "Internal pudendal aery", "Internal iliac aery" ]
B
The umbilical aery is a branch of the internal iliac aery. In the fetus, the umbilical aery passes over the bladder and continues up the anterior body wall to the umbilical cord and out to the placenta. As it passes the bladder, it gives rise to the superior vesical aeries. After bih, the pa of the aery distal to the bladder becomes fibrous, but the proximal pa remains patent and continues to supply the bladder.
medmcqa
If the population of a certain country increases at the rate of one person every 15 seconds, by how many persons does the population increase in 55 minutes?
[ "100", "220", "180", "150" ]
B
Since the population increases at the rate of 1 person every 15 seconds, it increases by 4 people every 60 seconds, that is, by 4 people every minute. Thus, in 55 minutes the population increases by 55 x 4 = 220 people.
aqua_rat
Bronze diabetes is seen in-
[ "Lead intoxication", "Hemochromatosis", "Sarcoidosis", "Wilson's disease" ]
B
Hemochromatosis o In hemochromatosis deposition of iron in the skin causes pigmentation (bronzing) of the skin and deposition of iron in the pancreas produces diabetes therefore the term bronze diabetes.o The clinical features of hemochromatosis are characterized principally by deposition of excess iron in the following organs in decreasing order of severity.Liver ( 95%)o Usually the first organ to be affected,o Hepatomegaly seen in most of the cases,o Micronodular cirrhosis is characteristico Hepatocellular carcinoma develops in 30% patientsSkin (90%)o Excessive skin pigmentation (Bronzing of the skin)o Skin pigmentation results partially due to hemosiderin deposition and mainly due to melanin depositiono Usually diffuse or generalized, but more pronounced on the face, neck and extensor aspects of lower forearmsPancreas (65%)o Leads to diabetes meilitusJoints (25-50%)o Arthropathyo PolyarthritisCardiaco Congestive heart failureo Arryhthmiao Cardiomyopathy (Restrictive)Hypogonadismo These changes are primarily the result of decreased production of gonadotropins due to impairment of hypothalamic-pituitary function by iron deposition however, primary testicular dysfunction may be seen in some cases
medmcqa
There are 408 boys and 192 girls in a school which are to be divided into equal sections of either boys or girls alone. Find the total number of sections thus formed.
[ "45", "30", "35", "25" ]
D
HCF (408, 192) = 24 The number of boys or girls that can be placed in a section = 24. Thus the total number of sections is given by 408/24+192/24 =17+8 = 25
aqua_rat
After decreasing 24% in the price of an article costs Rs.912. Find the actual cost of an article?
[ "1400", "1500", "1100", "1200" ]
D
CP* (76/100) = 912 CP= 12 * 100 => CP = 1200
aqua_rat
If W + A < W - A < A - W, which of the following is correct?
[ "0 < B < A.", "W < 0 < A.", "W < A < 0.", "A < W < 0." ]
C
Check first inequality W + A < W - A A<-A A is -ve Check another equality W - A < A - W -2A<-2W A>W Combining both 0>A>W Option B fits only
aqua_rat
One advantage of a live attenuated vaccine is?
[ "The viral strain does not reve to virulent forms", "It does not produce persistent infections", "It induces a wide spectrum of antibodies", "It has an unlimited shelf life" ]
C
An advantage of live attenuated vaccines is that they induce a wide spectrum of antibodies. Disadvantages include the possible production of persistent infections, reversion to highly virulent strains and a limited shelf life.
medmcqa
Which of the following drug is used to prevent acute mountain sickness?
[ "Acetazolamide", "Digoxin", "Diltiazem", "Dexamethasone" ]
A
AcetazolamideAcetazolamide is effective in preventing acute mountain sickness (AMS), high altitude pulmonary edema (HAPE), and high altitude cerebral edema (HACE).Mechanism in above pathology:* Counteracts the respiratory alkalosis which occurs during ascent to altitude* Facilitates the excretion of bicarbonate in the urine* Decreases pH of CSF* Decreases CSF formation
medmcqa
A red blood cell will swell and burst when placed in a?
[ "acidic solution", "dissolved solution", "hypotonic solution", "exothermic solution" ]
C
A cell that does not have a rigid cell wall, such as a red blood cell, will swell and lyse (burst) when placed in a hypotonic solution. Cells with a cell wall will swell when placed in a hypotonic solution, but once the cell is turgid (firm), the tough cell wall prevents any more water from entering the cell. When placed in a hypertonic solution, a cell without a cell wall will lose water to the environment, shrivel, and probably die. In a hypertonic solution, a cell with a cell wall will lose water too. The plasma membrane pulls away from the cell wall as it shrivels, a process called plasmolysis . Animal cells tend to do best in an isotonic environment, plant cells tend to do best in a hypotonic environment. This is demonstrated in Figure below .
sciq
If the area of a circle decreases by 30%, then the radius of a circle decreases by
[ "20%", "16%", "36%", "None of these" ]
B
If area of a circle decreased by x % then the radius of a circle decreases by (100−10√100−x)%=(100−10√100−30)% = (100−10√70)% = 100 - 84 = 16%
aqua_rat
If a = -0.5, which of the following is true?
[ "a^3 < a < a^2", "a < a^3 < a^2", "a^2 < a^3 < a", "a^2 < a < a^3" ]
B
a=-0.5; a^2=0.25; a^3=-0.125;
aqua_rat
A wheel rotates 15 times every minute and moves 35 cm during each rotation. How many metres does the wheel move in one hour?
[ "12 metre", "120 metre", "130 metre", "315 metre" ]
D
Number of times wheel moves in 1 hour = 15 * 60 = 900 :. Distance moves = (900 *35) cms = 31500 cms In metres = 315 metre
aqua_rat
How long does a vehicle 150 m long traveling at 50 kmph takes to cross a bridge of 150 m in length?
[ "21.6", "26.5", "56.2", "16.7" ]
A
D = 150 + 150 = 300 m S = 50 * 5/18 = 125/9 T = 300 * 9/125 = 21.6 sec
aqua_rat
Country C imposes a two-tiered tax on imported cars: the first tier imposes a tax of 10% of the car's price up to a certain price level. If the car's price is higher than the first tier's level, the tax on the portion of the price that exceeds this value is 8%. If Ron imported a $14,000 imported car and ended up paying $1440 in taxes, what is the first tier's price level?
[ "$1600", "$8000", "$7050", "$6050" ]
A
Let T be the tier price, P be total price = 14000 Per the given conditions:
aqua_rat
A box contains 5 pairs of shoes (10 shoes in total). If two shoes are selected at random, what it is the probability that they are matching shoes?
[ "1/9", "1/10", "1/20", "1/9" ]
A
The problem with your solution is that we don't choose 1 shoe from 10, but rather choose the needed one AFTER we just took one and need the second to be the pair of it. So, the probability would simply be: 1/1*1/9(as after taking one at random there are 9 shoes left and only one is the pair of the first one)=1/9
aqua_rat
Left testicular vein drains into ?
[ "Left renal vein", "Hepatic vein", "SVC", "IVC" ]
A
Left renal vein Right suprarenal and right gonadal (testicular/ovarian) veins -4 IVC.Left suprarenal and left gonadal (testicular/ovarian) veins - left renal vein.
medmcqa
The simple interest on 200 for 7 months at 5 paise per rupee per month is
[ "7", "35", "70", "30.5" ]
C
∵ Rate = 5 paise per rupee = 5% ∴ S.I. = 200×5×7/100=70
aqua_rat
Which model helps explain molecules with double or triple bonds?
[ "particle model", "hybridization model", "salinity model", "reactivity model" ]
B
The hybridization model helps explain molecules with double or triple bonds. Consider the ethene molecule (C 2 H 4 ), which contains a double covalent bond between the two carbon atoms and single bonds between the carbon atoms and the hydrogen atoms. The entire molecule is planar.
sciq
Yeast deposited in an oven from a closet
[ "rises", "compresses", "falls", "requires antifungal cream" ]
A
When yeast is placed in a warm environment like an oven, it becomes active and ferments, producing carbon dioxide gas, which causes the dough to rise.
openbookqa
If a/b = 1/3, b/c = 2, c/d = 1/2, d/e = 3 and e/f = 1/2, then what is the value of abc/def ?
[ "27/8", "3/4", "1/4", "3/8" ]
B
Say a = 3. Then: a/b = 1/3 --> b = 9; b/c = 2 --> c = 9/2; c/d = 1/2 --> d = 9; d/e = 3 --> e = 3; e/f = 1/2 --> f = 6. abc/def = (3*9*9/2)/(9*3*6) = 3/4.
aqua_rat
A = {2, 3, 5, 7, 11} B = {2, 4, 6, 17} Two integers will be randomly selected from sets A and B, one integer from set A and one from set B, and then multiplied together. How many different products can be obtained?
[ "19", "16", "20", "36" ]
C
Step 1: Find out the number of products you get. 5 distinct numbers in set A and 4 distinct in set B so number of products = 5*4 = 20 Step 2: Remove the products that appear more than once. Notice that 5, 7, 11 and 13 are primes and none of their multiples are in either set. So ignore them. We just need to focus on 2 and 3 of set A and 2, 4 and 6 of set B. 2, 3 2, 4, 6 The only product repeated when you take a number from each set is 12. (3*4 and 2*6) Rest all are distinct. Answer = 20 - 1 = 20 Note here that the second step will involve manual calculation since it will depend on the specific numbers you have in the two sets.
aqua_rat
Cell most sensitive to radiation –
[ "Lymphocytes", "Platelets", "Neutrophils", "Basophils" ]
A
Blood cells most sensitive to radiation → Lymphocytes Blood cells least sensitive to radiation → Platelets
medmcqa
Ligament supporting the head of talus -
[ "Deltoid ligament", "Cervical ligament", "Talonavicular ligament", "Plantar calcaneonavicular ligament" ]
D
Plantar calcaneonavicular ligament o Spring ligament (Plantar calcaneonavicular ligament) connects the calcaneum with the navicular bone,o However, its principal job is to provide a sling for the talus, to support the head oftalus (though it has no attachment to talus).o This aids in supporting the weight of the body,o Weaknes or lengthening along this ligament can cause flat foot.
medmcqa
A,B,C together can do a work in 8 days. A alone can do the work in 30 days and B alone can do the same work in 20 days. Find in what time C alone can do that work?
[ "24days", "16days", "32.4days", "28.5days" ]
A
The required answer is = 8*30*20 / 30*20-8(30+20) = 4800/200 = 24days
aqua_rat
Garden's classification used for which fracture?
[ "Shaft humerus", "Shaft femur", "Neck of femur", "Surgical neck humerus" ]
C
Neck of femur Garden's classification Garden's classification is the most useful and most accepted classification of the neck of femur. This is based on the degree of displacement of the fracture. Following 4 stages of fracture are there :? 1) Stage 1 : The fracture is incomplete, with head tilted in postero-lateral direction, i.e. into valgus, therefore is known as valgus (abduction) impacted fracture. 2) Stage 2 : Complete fracture but undisplaced. 3) Stage 3 : Complete fracture with paial displacement. 4) Stage 4 : Complete fracture with total displacement. The degree of displacement, in Garden's classification, is judged from change in the direction of medial trabecular stream of the neck, in relation to the bony trabeculae in the weight bearing pa of the head and in the corresponding pa of the acetabulum. i) Stage 1 :- There is an obtuse angle laterally at the trabecular stream. ii) Stage 2 :- Trebeculae between head and neck are broken but they are in alignment with each other and with trabeculae in the acetabulum. iii) Stage 3 :- All three trabeulae are out of alignment. iv) Stage 4 :- Acetabular and head trabeculae are in alignment but head and neck trabeculae are not aligned.
medmcqa
Which of the following metabolizes arginine?
[ "Mycoplasma pneumoniae", "Mycoplasma genitalium", "Mycoplasma hominis", "Ureaplasma urealyticum" ]
C
M. hominis metabolizes arginine, with the production of potentially cytotoxic amounts of ammonia. Ureaplasmas have been placed in a separate genus because of their unique urease activity; the metabolism of urea also produces ammonia.
medmcqa
Pulled up caecum is a feature of?
[ "Intussusception", "TB", "Necrotising enterocolitis", "Malignancy" ]
B
Pulled up caecum is a feature of TB
medmcqa
During a special promotion, a certain filling station is offering a 10 percent discount on gas purchased after the first 15 gallons. If Kim purchased 20 gallons of gas, and Isabella purchased 25 gallons of gas, then Isabella‟s total per-gallon discount is what percent of Kim‟s total per-gallon discount?
[ "100%", "160%", "80%", "116.7%" ]
B
Kim purchased 20 gallons of gas. She paid for 15 + 0.9*5 = 19.5 gallons, so the overall discount she got was 0.5/20 = 0.025. Isabella purchased 25 gallons of gas. She paid for 15 + 0.9*10 = 24 gallons, so the overall discount she got was 1/25 = 0.04. 4/2.5*100 = 160%
aqua_rat
Latex agglutination test in CSF is done for detection of:
[ "Coxsackie", "E.Coli", "Cryptococcus", "Tuberculosis" ]
C
Latex agglutination tests can detect antigens of encapsulated organisms (S. pneumoniae, H. influenzae, N. meningitidis, and Cryptococcus neoformans) but are rarely used Except for detection of Cryptococcus or in paially treated patients. PCR of CSF has been used to detect bacteria (S. pneumoniae, H. influenzae, N. meningitidis, M. tuberculosis) and viruses (HSV, VZV, CMV, EBV, and enteroviruses) in patients with meningitis.
medmcqa
10% loss on the selling price is what percent loss on the cost price?
[ "9/11%", "100/11%", "90/11%", "9/55%" ]
B
Let S.P. = $100 Then, loss = $10 C.P. = 100+10 = $110 Loss% = 10/110 * 100 = 9 1/11% = 100/11%
aqua_rat
A committee of 6 is chosen from 7 men and 5 women so as to contain at least 2 men and 3 women. How many different committees could be formed?
[ "2620", "455", "3510", "700" ]
B
The only cases possible are : 1. 2 men and 4 women : 7C2 * 5C4 = 105 2. 3 men and 3 women: 7C3*5C3 = 350 Rest of the cases will either have 1 or 0 men (not allowed) or will have 1 or 2 or 0 women (not allowed)
aqua_rat
In how many ways can 6 people be seated at a round table if one of those seated cannot sit next to 2 of the other 5?
[ "84", "720", "108", "120" ]
A
6 People in a round table can be seated in (6 - 1) ! ways = 120. Now we need to subtract the number of cases when one of those is sitting next to 2 of the other 5. We can consider as if 5 people are sitting in a row because it is round table. Again consider 3 people, those who can not sit together, as a single unit – So the possible arrangements among remaining people 5 – 3 + 1 Unit are = 3 ! And the 3 people unit can arrange among themselves in 3 ! ways. So the possible cases when one of those is sitting next to 2 of the other 5 = 3 ! * 3 ! = 36
aqua_rat
Cyclosporin acts by inhibiting the proliferation of:
[ "Macrophages", "IL6", "IL2", "IL1" ]
C
Mechanism of action of cyclosporine Normally when antigen presenting cell (e.g. macrophage) present antigen to Helper T cell, there is activation of T cell by sequential intracellular eventsFirst calcium ions, after binding to calmodulin activate a membrane serine / threonine phosphatase called calcineurin. Calcineurin activates nuclear factor of activated T cells (NFAT) by dephosphorylation. Activated NFAT migrates to nucleus and induce transcription of cytokines IL-2 and other cytokinase. IL-2 activates T cells and cause proliferation of T cells. Cyclosporine enters target cells and bind to cyclophilin (an immunophilin). This cyclosporine – cyclophilin complex inactivates calcineurin IL-2 trascripitan and proliferation of T cells
medmcqa
A photograph measuring 2 1''⁄2 × 1 7''⁄8 is to be enlarged so that the length will be 4”. How many inches will the enlarged breadth be?
[ "2 1⁄8", "3 3⁄8", "1 1⁄2", "3" ]
D
Let enlarged breadth be x inches. Then, 5⁄2 : 4 :: 15⁄8 : x ⇒ 5⁄2x = 4 × 15⁄8 ⇒ x = 3 inches.
aqua_rat
What is the greatest possible length which can be used to measure exactly the lengths 18 m, 40 m and 6 m 50cm?
[ "25cm", "28 cm", "23 cm", "10 cm" ]
D
Required length = HCF of 1800 cm, 4000 cm, 650 cm = 50 cm
aqua_rat
Seeing the stars will be harder when what happens?
[ "light in an area becomes greater", "there is a lot of rain", "light in an area becomes lessened", "there is a lot of snow" ]
A
Increased light in an area, such as from streetlights or buildings, creates light pollution, which obscures the visibility of stars in the night sky.
openbookqa
A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
[ "40 sec", "18 sec", "16 sec", "65 sec" ]
A
Speed = 45 * 5/18 = 25/2 m/sec Total distance covered = 360 + 140 = 500 m Required time = 500 * 2/25 = 40 sec
aqua_rat
A sporting goods store sold 60 Frisbees in one week, some for $3 and the rest for $4 each. If receipts from Frisbee sales for the week totaled $200, what is the fewest number of $4 Frisbees that could have been sold?
[ "24", "2", "20", "12" ]
C
The wording of the question is slightly misleading. When a question asks what is thefewestthatcouldhave been sold, it is suggesting that there could be many different quantities sold. In this question however, because we are told that exactly 64 Frisbees have been sold and revenue was exactly $204, there is only one possible solution for the number of $3 and $4 Frisbees sold. To solve, we have 2 equations and 2 unknowns Let x = number of $3 Frisbees sold Let y = number of $4 Frisbees sold x + y = 60 3x + 4y = 200 x = 60 - y 3(60-y) + 4y = 200 180 - 3y + 4y = 200 y = 20
aqua_rat
Malignant gastric ulcers are characterized by A/E ?
[ "Malignant gastric ulcers are characterized by A/E ?", "Mucosal rugae stop far of ulcers", "Eccentric crater", "Margins are raised" ]
A
Ulcer extends beyond the gastric wallo In malignant ulcers mucosal rugae stop far of the ulcers whereas in benign ulcers mucosal rugae projects outwards from the margins of the ulcer
medmcqa
In a competitive examination in State A, 6% candidates got selected from the total appeared candidates. States B had an equal number of candidates appeared and 7% candidates got selected with 80 more candidates got selected than A. What was the number of candidates appeared from each State ?
[ "8000", "Data inadequate", "None of these", "8400" ]
A
Let the number of candidates appeared from each State be x. Then, 7 % of x -6% of x = 80 ⇔ 1% of x = 80 ⇔ x = 80 × 100 = 8000.
aqua_rat
The superior vesical aeries are direct branches of the
[ "External pudendal aery", "Umbilical aery", "Internal pudendal aery", "Internal iliac aery" ]
B
The umbilical aery is a branch of the internal iliac aery. In the fetus, the umbilical aery passes over the bladder and continues up the anterior body wall to the umbilical cord and out to the placenta. As it passes the bladder, it gives rise to the superior vesical aeries. After bih, the pa of the aery distal to the bladder becomes fibrous, but the proximal pa remains patent and continues to supply the bladder.
medmcqa
A certain telephone company company charges 3.10 cents for the first 1/5 of a minute plus 0.40 cents for each additional 1/5 of a minute. What would this company charge for a talk time of 8 minutes long?
[ "18.7", "17.8", "15.60", "19.1" ]
A
first 1/5 minute charge = 3.10 cents rest of the minute = 8 - (1/5) = 39/5 charge for the rest of the minute = 39 *0.4 = 15.6 total charge = 3.10+15.6 = 18.7 cents
aqua_rat
25-year body builder was using anabolic steroids and staed having puffy feet for last 2 months. He died suddenly during a work out and post moem hea biopsy specimen repo is shown below. Diagnosis is?
[ "Restrictive cardiomyopathy", "Hyperophic cardiomyopathy", "Dilated cardiomyopathy", "Athlete's hea" ]
C
Option D: Athlete Hea should show hyperophy & large no. of myocytes & in this slide hyperophy is not seen. HOCM Irregular arrangement of large no. of myocytes. DCM Giant Nucleus & multiple nucleus & loss of organized structure in myocyte due to inflammation RCM Fibrosis
medmcqa
What will come in place of the x in the following Number series? 11, 14, 19, 22, 27, 30, x
[ "36", "35", "23", "26" ]
B
(D) The pattern is + 3, + 5, + 3, + 5, …………
aqua_rat
Two trains are running in opposite directions with the same speed. If the length of each train is 240 m and they cross each other in 12 sec, then the speed of each train is?
[ "34", "72", "23", "36" ]
B
Let the speed of each train be x m/sec. Then, relative speed of the two trains = 2x m/sec. So, 2x = (240 + 240)/12 => x = 20 Speed of each train = 20 m/sec. = 20 * 18/5 =72 km/hr.
aqua_rat
Protein quality assessment is best done by –
[ "Digestibillity coefficient", "NPU", "Biological value", "Amino acid score" ]
B
Net protein utilization is considered to be most practile because it is the product of biological value and digestibility coefficient divided by 100.
medmcqa
Best test for seminal stains is:
[ "Barbeiros test", "Alkaline Phosphatase test", "Florence test", "Acid Phosphatase test" ]
D
The acid phosphatase test- 1. Level > 25 kA Unit is specific for the test or Undiluted semen has an acid phosphatase activity of 340 - 360 Bodansky U/ml, it is higher in humans as compared to animals. 2. It is +ve also by human RBCs, semen of higher apes and juice of cauliflower. 3. The prostatic secretion element of seminal fluid contains a very much higher percentage of acid phosphatase. 4. This test is conclusive in the absence of demonstrable sperms or in aspermia. 5. Is a quantative test.
medmcqa
45 men can complete a work in 18 days. Six days after they started working, 30 more men joined them. How many days will they now take to complete the remaining work?
[ "6.6", "10", "15", "7.2" ]
D
45*18 men can complete the work in 1 day 1 man's 1 day work = 1/810 45 men 6 days work = 6*1/18 = 1/3 remaining work = 1-1/3 = 2/3 75 men's 1 day's work = 75/810 = 5/54 2/3 work is done by them in 54/5 * 2/3 = 7.2 days
aqua_rat
A 27-year-old patient with a chief complaint of mild veigo of 3-months duration is seen by a neurologist. Examination reveals a positional (horizontal and veical) nystagmus that is bidirectional. The patient repos the absence of tinnitus. Which of the following is the most likely etiology of veigo?
[ "Lesion of the spinocerebellum", "Lesion of the flocculonodular lobe of the cerebellum", "Labyrinthitis", "Meniere's syndrome" ]
B
Pathologic veigo is generally classified as peripheral (labyrinthine) or central (brainstem or cerebellum).The clinical presentation, in this case, is most consistent with central veigo. Positional (especially horizontal) nystagmus (to-and-fro oscillation of the eyes) is common in the veigo of central origin, but absent or uncommon in peripheral veigo. The chronicity of the veigo is characteristic of central veigo, whereas the symptoms of peripheral veigo generally have a finite duration and may be recurring.Tinnitus and/or deafness is often present in peripheral veigo, but absent in central veigo. The flocculonodular lobe, or vestibulocerebellum, is connected to the vestibular nuclei and paicipates in the control of balance and eye movements, paicularly changes in the vestibuloocular reflex (VOR), which serves to maintain visual stability during head movement.A lesion of this area of the cerebellum may result in veigo and nystagmus, whereas the spinocerebellum is involved in the coordination of limb movement.
medmcqa
A and B can do a piece of work in 10 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in?
[ "33", "11", "878", "10" ]
D
C = 1/5 – 1/10 = 1/10 => 10 days
aqua_rat
In science, what is supported by much evidence, widely accepted by credible scientists, and unlikely to be disproved?
[ "theory", "law", "hypothesis", "concept" ]
A
The three theories below are essential in Earth science. Each accounts for an enormous amount of data. Each is supported by many lines of evidence. All can be used to make predications. As new evidence arises, any of these theories may need to be altered. But none of these three are likely ever to be disproved. They are accepted by nearly all of the credible scientists in their fields.
sciq
An AIDS patient develops symptoms of pneumonia, and Pneumocystis carinii is suspected as the causative organism. Bronchial lavage is performed. Which of the following stains would be most helpful in demonstrating the organism's cysts on slides made from the lavage fluid?
[ "Prussian blue", "Alcian blue", "Hematoxylin and eosin", "Methenamine silver" ]
D
The appropriate stain is methenamine silver, and the requisition slip when submitting the wash fluid should have a reference to either Pneumocystis or methenamine silver, since routine hematoxylin and eosin does not adequately demonstrate the organisms. The cysts, when stained with methenamine silver, have a characteristic cup or boat shape; the trophozoites are difficult to demonstrate without electron microscopy. It is also woh knowing that sputum samples are not nearly as effective as bronchial washes in demonstrating the organisms.Alcian blue is good for demonstrating mucopolysaccharides.Hematoxylin and eosin is the routine tissue stain used in pathology laboratories. Prussian blue is good for demonstrating iron.
medmcqa
Vector of scrub typhus in man ?
[ "Leptotrombidium deliense", "Pediculous humanus", "Lice", "O. tsutsugamushi" ]
A
Leptotrombidium deliense o For scrub typhus :- Causative agent R. tsutsugamushi Vector trombiculid mite (Leptotrombidium delinese and L. akamushi)
medmcqa
A series of book was published at seven years intervals when the seventh book was published the total sum of publication year was 13, 1524. first book was published in?
[ "1913", "1912", "1911", "1914" ]
C
First of all total sum of publication years is 13524 not 131524. Let the first year is x. so the years are x, x+7, x+14, x+21, x+28, x+35 and x+42. Now Sum of all years = (n/2)(2a+(n-1)d) [n=number of years, a=first year, d=difference of two years] =(7/2)(2x+(7-1)7) =7x+147 Again Sum of all years = 13524 So, 7x+147=13524 => x=1911
aqua_rat
Becky sets up a hot dog stand in her busy neighborhood and purchases x pounds of hot dogs for t dollars per pound. If she has to throw away s pounds of hot dogs due to spoilage and she sells the rest of the hot dogs for d dollars per pound, which of the following represents the net profit on the sale of the hot dogs?
[ "xd – st", "(s – t)d – xt", "(x – s)t – sd", "(x – s)d – xt" ]
D
Answer D:
aqua_rat
Seven children — A, B, C, D, E, F, and G — are going to sit in seven chairs in a row. Child A has to sit next to both BG, with these two children immediately adjacent to here on either side. The other four children can sit in any order in any of the remaining seats. How many possible configurations R are there for the children?
[ "480", "720", "1440", "240" ]
D
MAGOOSHOFFICIAL SOLUTION: First, we will consider the restricted elements - children ABG have to be in three seats in a row. How many “three in a row” seats are there in a row of seven seats? X X X _ _ _ _ _ X X X _ _ _ _ _ X X X _ _ _ _ _ X X X _ _ _ _ _ X X X There are five different “three in a row” locations for these three children. Now, for any given triplet of seats, we know A has to be in the middle, so the children could be seated B-A-G or G-A-B - just those two orders. This means the total number of configurations for these three children is 5*2 = 10. Now, consider the non-restricted elements, the other four. Once ABG are seated, the remaining four children can be seated in any order among the remaining four seats - that’s a permutation of the 4 items -- 4P4 = 4! = 24. For any single configuration of ABG, there are 24 ways that the other children could be seated in the remaining seats. Finally, we’ll combine with the Fundamental Counting Principle. We have 10 ways for the first three, and 24 ways for the remaining four. That’s a total number of configurations R of 24*10 = 240.
aqua_rat
Two prime numbers are considered consecutive if no other prime lies between them on the number line. If p1p1 and p2p2 are consecutive primes, with |p1–p2|>2, what is the smallest possible absolute value of the coefficient of the x term in the distributed form of the expression (x–p1)(x–p2)?
[ "5", "8", "18", "12" ]
C
(x−p1)∗(x−p2)=x2−(p1+p2)x+p1p2 Value of (p1+p2) will be min. for the min consecutive primes which satisfy |p1-p2|>2 So the min. value p1 & p2 can take = 7, 11 p1+p2= 7+11= 18
aqua_rat
Damage to which Brodmann area is responsible for motor aphasia
[ "39", "40", "44", "22" ]
C
Motor aphasia is due to lesion in Broca's area which belong to Brodmann's area 44, (inferior frontal gyrus).
medmcqa
A car is running at a speed of 60kmph. What distance will it cover in 8sec?
[ "136m", "100m", "200m", "180m" ]
A
Speed = 60kmph = 60*5/18 = 17 m/s Distance covered in 8sec = 17*8 = 136m
aqua_rat
In how many ways can four members be selected from a group of eight members?
[ "8C4", "10C6", "10C8", "8C3" ]
A
Four members can be selected from eight members in 10C6 = 8C4 ways.
aqua_rat
At the quarterly birthday party of Sherry, a baby boy, 40 persons chose to kiss him and 25 chose to shake hands with him. 10 persons chose to both kiss him and shake hands with him. How many persons turned out at the party?
[ "75", "45", "55", "25" ]
C
Let n(A) = No. of persons who kissed Sherry = 40 n(B) = No. of persons who shook hands with Sherry = 25 and n(A ∩ B) = No. of persons who both shook hands with Sherry and kissed him = 10 Then, using the formula, n(A U B) = n(A) + n(B) - n(A ∩ B) n(A U B) = 40 + 25 - 10 = 55.
aqua_rat
If an article is sold at 19% profit instead of 12% profit, then the profit would be Rs. 105 more. What is the cost price?
[ "1500", "1533", "1202", "1543" ]
A
Let the cost price of an article be Rs. x. (19% of x) - (12% of x) = 105 19x/100 - 12x/100 = 105 => 7x = 105 * 100 => x = 1500 Cost price = Rs. 1500
aqua_rat
Which of the following organisms, when isolated in the blood, requires the synergistic activity of penicillin plus an aminoglycoside for appropriate therapy -
[ "Bacteroides fragilis", "Str. pneumoniae", "Enterococcus faecalis", "Staphylococcus aureus" ]
C
Organism Features Enterococcus faecalis Resistant to penicillins, aminoglycosides and sulfonamides. Intrinsic resistance to cephalosporins and cotrimoxazole. In c/o resistance -combine- Penicillin + Aminoglycoside as they act synergestically. Staphylococcus aureus Rx : Parenteral therapy for serious infections Oral therapy for skin and soft tissue infections Sensitive to penicillin- DOC: Penicillin G Sensitive to methicillin-DOC: Nafcillin or oxacillin Resistant to methicillin (MRSA)- DOC: Vancomycin Sensitive to methicillin- DOC: Dicloxacillin, cephalexin Resistant to methicillin (MRSA) - DOC: Clindamycin Streptococcus pneumoniae Rx DOC- Penicillin G Alternative : Cephalosporins(ceftriaxone) Bacteroides fragilis Obligately anaerobe, non-spore forming gram-negative bacilli C/F- Brain abscess, subdural empyema, epidural abscess, and meningitis Endocarditis, meningitis, septic ahritis and osteomyelitis Colonies- Brilliant red fluorescence Rx- Metronidazole
medmcqa