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Hormones produced by what gland in the neck increase the rate of metabolism in cells throughout the body?
A. pituitary
B. thymus
C. kidney
D. thyroid
Answer: | D |
When the ventricles begin to contract, pressure within the ventricles rises and blood flows toward the area of lowest pressure, which is initially in the atria. this backflow causes the cusps of the tricuspid and mitral (bicuspid) valves to close. these valves are tied down to the papillary muscles by these?
A. chollphyide tendineae
B. choanocyte tendineae
C. chordae tendineae
D. photoreactive tendineae
Answer: | C |
What is the skin of most reptiles covered with?
A. scales
B. cuticle
C. pores
D. hairs
Answer: | A |
Gasoline, natural gas, fuel oil, diesel fuel, jet fuel, coal, kerosene, and propane are examples of what type of fule?
A. hydrocarbon fuel
B. polymerization fuel
C. nuclear fue
D. electrolysis fuel
Answer: | A |
Nearly all life processes depend on what substance, which is involved in biochemical reactions?
A. food
B. hydrocarbons
C. air
D. water
Answer: | D |
What has increased in the atmosphere throughout the history of the earth?
A. nitrogen
B. carbon
C. wind
D. oxygen
Answer: | D |
Which two states of matter have definite volumes?
A. contrasts and liquids
B. bacteria and liquids
C. solids and liquids
D. GAS AND LIQUIDS
Answer: | C |
Tendon, cartilage, and bone are examples of what type of tissue that supports and binds other tissues of the body?
A. muscular tissue
B. untreated tissue
C. connective tissue
D. repetitive tissue
Answer: | C |
What is the sac-like organ at the end of the esophagus?
A. larynx
B. appendix
C. rectum
D. stomach
Answer: | D |
Which class of acids acetic acid (ch 3 cooh) belongs to?
A. anorganic acids
B. organic acids
C. strong acids
D. common acids
Answer: | B |
What happens to the total energy of the system when heat is positive?
A. it decreases
B. it increases
C. nothing
D. it remains constant
Answer: | B |
What type of species can alternate between medusa and polyp forms?
A. cnidarian
B. chordata
C. crocodilian
D. mollusks
Answer: | A |
Extensive and intensive are categories of properties that apply to what?
A. matter
B. volume
C. height
D. weight
Answer: | A |
The vertebrate circulatory system enables blood to deliver ________ and remove wastes throughout the body.
A. oxygen and nutrients
B. fluid and nutrients
C. acid and nutrients
D. hydrogen and nutrients
Answer: | A |
By what kind of change can a chemical change be reversed?
A. another carbon change
B. another radioactive change
C. another thermal change
D. another chemical change
Answer: | D |
Earthquakes at convergent plate boundaries mark the location of the what?
A. speeding lithosphere
B. subducting lithosphere
C. abducting lithosphere
D. shorting lithosphere
Answer: | B |
New seafloor forms when what object cools?
A. debris
B. rain
C. lava
D. ash
Answer: | C |
What are groups of atoms that behave as a single unit called?
A. ions
B. protons
C. molecules
D. particles
Answer: | C |
Hormones cause cellular changes by binding to receptors on these?
A. fighter cells
B. reach cells
C. target cells
D. able cells
Answer: | C |
Food provides what type of energy needed by organisms, which is stored in bonds?
A. caffeine
B. radiation energy
C. chemical energy
D. calories
Answer: | C |
Catabolic reactions involve breaking what?
A. molecules
B. levels
C. bonds
D. metals
Answer: | C |
Scientists explain the world based on what?
A. patterns
B. theories
C. observations
D. changes
Answer: | C |
What is the general name for saturated hydrocarbons?
A. alkanes
B. petrolatums
C. enzymes
D. halides
Answer: | A |
Changing electric and mnagnetic fields radiate outward when?
A. firing particles accelerate
B. particles lose their charge
C. particles multiply
D. charged particles accelerate
Answer: | D |
What significant part of the cell do prokaryotic cells lack?
A. a ribosome
B. a nucleus
C. mitochondrial dna
D. a cell wall
Answer: | B |
Where do ectotherms get most of their heat?
A. food
B. metabolism
C. external sources
D. internally
Answer: | C |
What layer is above the mesosphere?
A. thermosphere
B. stratosphere
C. exosphere
D. ionosphere
Answer: | A |
What is produced by leydig cells in the embryonic testis and stimulates the development of male sexual organs?
A. androgen
B. insulin
C. estrogen
D. testosterone
Answer: | D |
What is a continuous flow of electric charges called?
A. electric current
B. circuit
C. magnetic current
D. electricity
Answer: | A |
What causes high winds and monsoon storms in the desert?
A. moderate spring temperature
B. high summer temperature
C. low winter temperature
D. and-12 summer temperature
Answer: | B |
What are the three most common protective devices?
A. fuses , circuit breaks & surge claws
B. fuses, circuit breaks & surge protectors
C. fuses , fabrication breaks & surge protectors
D. tranistors, resistors & diodes
Answer: | B |
Which veins return oxygen-rich blood from the lungs to the heart?
A. pulmonary
B. varicose
C. respiratory
D. jugular
Answer: | A |
Makemake and pluto are classified as what type of celestial object?
A. dwarf planets
B. gas giants
C. black holes
D. nebula
Answer: | A |
What do you call the entire range of wavelengths of electromagnetic waves?
A. molecular spectrum
B. electric spectrum
C. electromagnetic spectrum
D. gaseous spectrum
Answer: | C |
Joules and calories are the units of what?
A. mass and potential
B. weight and energy
C. energy and heat
D. heat and velocity
Answer: | C |
The brain and spinal cord are part of what system?
A. central nervous system
B. cardiovascular system
C. immune system
D. digestive system
Answer: | A |
The two parathyroid glands are located behind what gland?
A. hypothalmus
B. pituitary gland
C. thyroid
D. thymus
Answer: | C |
Fission is a method of what type of reproduction exhibited by some planarians?
A. asexual
B. propagation
C. sexual
D. spawning
Answer: | A |
The best method for preparing pure phosphorous acid is by hydrolyzing what?
A. phosphorus trichloride
B. carbon trichloride
C. dioxide trichloride
D. dioxide phosphat
Answer: | A |
What bonds result from the overlap of atomic orbitals?
A. covalents
B. valent
C. metallic
D. hydrogen
Answer: | A |
What is a cluster of neuron cell bodies in the pns called?
A. ganglion
B. groupilion
C. gangnem
D. crystals
Answer: | A |
Unlike the passive form, the sodium-potassium pump uses what type of transport?
A. active
B. phase
C. Low
D. High
Answer: | A |
On insects, what are the openings on the sides of the abdomen that allows respiration to occur?
A. chloroplasts
B. gills
C. spiracles
D. wings
Answer: | C |
Salts of weak acids or bases can affect the acidity or what of their aqueous solution?
A. atomicity
B. ductility
C. basicity
D. compound
Answer: | C |
Flowers, double fertilization, and fruits are unique features of what life cycle?
A. early lifehood
B. angiosperm
C. dinoflagellate
D. protozoa
Answer: | B |
What is most often the cause of encephalitis?
A. parasites
B. calcium buildup
C. bacterial infections
D. viruses
Answer: | D |
Why do microwaves have a higher energy than radio waves?
A. lower frequency
B. higher resonance
C. higher decibel
D. higher frequency
Answer: | D |
What is cytology.
A. the study of cancers
B. the study of plants
C. the study of cell structure
D. the study of atomic structure
Answer: | C |
When solids change to gasses, they generally pass through what other state?
A. carbon
B. chemical
C. frozen
D. liquid
Answer: | D |
What is the structure which hangs from a newly hatched salmon larva?
A. stomach sac
B. yolk sac
C. liquid sac
D. air sac
Answer: | B |
What is made up of the pinna, ear canal, and eardrum?
A. the inner ear
B. the outer ear
C. the nervous system
D. the epidermis
Answer: | B |
What type of solvents is glucose insoluble in?
A. nonpolar
B. polar
C. alkaline
D. acidic
Answer: | A |
What organ is divided into the duodenum, the jejunum, and the ileum?
A. kidney
B. lung
C. large intestine
D. small intestine
Answer: | D |
Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what?
A. air pressure
B. temperature
C. oxygen
D. precipitation
Answer: | B |
A comet striking the earth may have caused mass extinction, this would have decreased sunlight, which would have effected what plant process reducing food?
A. fertilization
B. photosynthesis
C. glycolysis
D. decomposition
Answer: | B |
Normal body temperature is ideal for most of what type of reactions?
A. theoretical
B. biochemical
C. gas
D. plasma
Answer: | B |
What separates and strongly unites bodies of adjacent vertebrae?
A. synovial fluid
B. collagen fibers
C. intervertebral disc
D. interstitial fluid
Answer: | C |
About 20 percent of carbon dioxide is bound by hemoglobin and is transported where?
A. brain tissues
B. intestines
C. bones
D. lungs
Answer: | D |
Which outermost secondary xylem layers transport water?
A. the farthest
B. the oldest
C. the narrowest
D. the youngest
Answer: | D |
What did volcanic gases help to form on earth?
A. plants
B. water
C. rocks
D. atmosphere
Answer: | D |
What is formed when the ceiling of an underground cave collapses?
A. sinkhole
B. groundwater
C. hill
D. mountain
Answer: | A |
What type of muscle makes up most of the heart?
A. heart muscle
B. cardiac muscle
C. respiratory muscle
D. chest muscles
Answer: | B |
What measures the amount of water in the air?
A. fire index
B. temperature
C. humidity
D. cloud cover
Answer: | C |
Most terrestrial vertebrates have what type of lungs?
A. internal
B. mechanical
C. external
D. extra
Answer: | A |
What process joins two haploid gametes into a diploid zygote?
A. fertilization
B. embryo
C. fusion
D. migration
Answer: | A |
Planets are held by the force of gravity in elliptical orbits around what?
A. sun
B. mars
C. earth
D. jupitor
Answer: | A |
What is the fastest land animal?
A. ostrich
B. rhino
C. cheetah
D. greyhound
Answer: | C |
What is the process by which the remains of living things become fossils?
A. petrification
B. decomposition
C. fossilization
D. sublimation
Answer: | C |
Meters, such as those in analog fuel gauges on a car, are a common application of magnetic torque on a current-carrying what?
A. loop
B. dial
C. circuit
D. arc
Answer: | A |
What causes reduction of elasticity in all organs?
A. age
B. radiation
C. weight gain
D. low vitamin D
Answer: | A |
How many protons and electrons each do carbon atoms have?
A. six
B. nine
C. two
D. five
Answer: | A |
What thickens the cortex around the inner edge of a cell?
A. plasma membrane
B. mitochondria
C. microfilaments
D. vacuoles
Answer: | C |
What value of dissolved substances is higher than that of their corresponding precipitate?
A. negentropy
B. ordiny
C. binary
D. entropy
Answer: | D |
Is an acid lower or higher than 7 on the ph scale?
A. higher than 7
B. twice as much as 7
C. exactly 7
D. lower than 7
Answer: | D |
Although what biochemicals circulate throughout the body and come into contact with many different cell types, they only affect cells that possess the necessary receptors?
A. hormones
B. enzymes
C. organs
D. Cells
Answer: | A |
The right atrium receives all of the systemic venous return. most of the blood flows into either the superior vena cava or this?
A. exterior vena cava
B. resulted vena cava
C. inferior vena cava
D. identical vena cava
Answer: | C |
Tissue is made up of layers of tightly packed cells that line the surfaces of the body, such as skin.
A. resultant tissue
B. weak tissue
C. neural tissue
D. epithelial tissue
Answer: | D |
Most lipid hormones are derived from what?
A. cholesterol
B. protein
C. fat
D. tissue
Answer: | A |
A fact or question is only considered science if it has what property?
A. it is believable
B. it is interesting
C. it is mineral
D. it is testable
Answer: | D |
Which branch of science is the study of energy, matter, and their interactions?
A. geology
B. meteorology
C. physics
D. biology
Answer: | C |
What is the smallest unit capable of life known as?
A. organism
B. a cell
C. living thing
D. insect
Answer: | B |
Making associations between experiences is often a part of what activity?
A. learning
B. eating
C. dying
D. sleeping
Answer: | A |
The spectrum is made up of discrete lines representing transitions of the hydrogen electron between specific energy levels within what?
A. an element
B. the molecule
C. the atom
D. a rainbow
Answer: | C |
In the field of biodiversity, "richness" and "abundance" are used to describe different what?
A. nutrients
B. species
C. densities
D. water sources
Answer: | B |
Nitrogen is an important macronutrient because it is part of nucleic acids and proteins. atmospheric nitrogen, which is the diatomic molecule n2, or dinitrogen, is the largest pool of nitrogen in these?
A. desert biomes
B. terrestrial ecosystems
C. aquatic ecosytems
D. gas planets
Answer: | B |
What is the term for rotation of a bone toward the midline of the body?
A. lateral rotation
B. visual rotation
C. interior rotation
D. medial rotation
Answer: | D |
What cause rabies, measles, diarrheal diseases, hepatitis, polio, and cold sores?
A. contaminants
B. bacteria
C. viruses
D. parasites
Answer: | C |
What are the two methods in which mutations arise in dna?
A. produced or spontaneous
B. accelerated or spontaneous
C. induced or spontaneous
D. accelerated or random
Answer: | C |
Water follows where sodium ions lead, due to what process?
A. electrolysis
B. absorption
C. hydration
D. osmosis
Answer: | D |
What group of simple organisms recycles nutrients and has been on earth since long before multicellular life appeared?
A. bacteria
B. protists
C. eukaryotes
D. prokaryotes
Answer: | D |
What is the term for dry climate regions at higher altitudes that have short grasses and low bushes?
A. deserts
B. fringes
C. steppes
D. prairie
Answer: | C |
Changing the frequency of sound waves, will change the _________ of the sound of a musical instrument?
A. distance
B. velocity
C. pitch
D. direction
Answer: | C |
What does the term porifera means?
A. pore-clogging
B. poreless
C. pore-bearing
D. pore - signifying
Answer: | C |
What zone is the narrow strip along the coastline that is covered by water at high tide and exposed to air at low tide?
A. intertidal zone
B. astrolabe zone
C. disturbance zone
D. aquifer zone
Answer: | A |
Integral and peripheral proteins are associated with what fatty bilayer?
A. lipid
B. protein
C. cartilage
D. carbohydrate
Answer: | A |
What effect describes how earth’s rotation steers winds and surface ocean currents?
A. Big Bang theory
B. coriolis
C. centripetal force
D. dorsalis
Answer: | B |
What type of shape does sodium chloride have?
A. oblong
B. round
C. cubic
D. trianguler
Answer: | C |
In what form of matter is hydrogen at room temperature?
A. solid
B. gas
C. dissolved
D. liquid
Answer: | B |
What is the smallest contractile portion of a muscle?
A. filaments
B. sarcomere
C. cell
D. capillary
Answer: | B |
Which is the fourth planet from the sun?
A. mars
B. earth
C. jupiter
D. mars
Answer: | A |
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