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Rubber is an example of what type of substances that do not allow electrons to move through them?
A. insulators
B. conductor
C. semi-conductor
D. solids
Answer: | A |
What gland is located in the neck, where it wraps around the trachea?
A. thyroid gland
B. salivary gland
C. adrenal gland
D. pituitary gland
Answer: | A |
What is influences the inhibition of axillary buds by an apical bud?
A. cortical dominance
B. eliptical dominance
C. apical dominance
D. anterior dominance
Answer: | C |
The colorless, odorless gas released when we breath is carbon dioxide. the harmful colorless, odorless gas released when matter is burned is what?
A. carbon monoxide
B. methane
C. carbon trioxide
D. acid monoxide
Answer: | A |
How are bacteria cells similar to our cells?
A. dna & plasma membrane
B. plasma and number of protons
C. shape and size
D. dna and number of protons
Answer: | A |
What kind of health problem can occur in the kidney and potentially cause problems with urination?
A. infection
B. diabetes
C. gallstones
D. kidney stones
Answer: | D |
What can alkenes and alkynes be reduced with to form alkanes?
A. hydrogen gas
B. enzymes
C. acids
D. oxygen
Answer: | A |
The vapor pressures of various liquids depends primarily on the strength of what kind of attractions between individual particles?
A. gravitational
B. diffusion
C. intermolecular
D. outer molecular
Answer: | C |
What is the term for a structure within the cytoplasm that performs a specific job in the cell?
A. nucleus
B. organelle
C. mitochondria
D. ribosome
Answer: | B |
The two members of a given pair of chromosomes are called what?
A. isolated chromosomes
B. tissue chromosomes
C. divergant chromosomes
D. homologous chromosomes
Answer: | D |
What type of organism is used to produce alcoholic beverages and bread?
A. larvae
B. yeast
C. insects
D. bacteria
Answer: | B |
On top of the otolithic membrane is a layer of calcium carbonate crystals, called what?
A. cones
B. gonads
C. otoliths
D. calcites
Answer: | C |
What do we call the locations where electrons are likely to be located around the nucleus?
A. cores
B. orbitals
C. isotopes
D. radials
Answer: | B |
What makes up the central nervous system?
A. heart and lungs
B. spine and lungs
C. brain and spinal cord
D. brain and heart
Answer: | C |
Obligate anaerobes live and grow in the absence of what?
A. molecular carbon
B. molecular oxygen
C. atomic oxygen
D. molecular nitrogen
Answer: | B |
What is the common term for single-celled fungi?
A. sponges
B. yeasts
C. mushrooms
D. prokaryotes
Answer: | B |
What process allows particles too large to move along the stream bed?
A. channelization
B. impaction
C. diffusion
D. saltation
Answer: | D |
Conducting wires have a small degree of what?
A. magnetism
B. electrical resistance
C. insulation
D. heat
Answer: | B |
What allowed life to expand and diversify during the early cambrian period?
A. cool, humid climate
B. warm, humid climate
C. hot, dry climate
D. cool, dry climate
Answer: | B |
What do you call the fast-moving air currents high in the troposphere?
A. stationary fronts
B. jet streams
C. cyclones
D. wind streams
Answer: | B |
What describes a close and long-term interaction between different species?
A. endosymbiosis
B. symbiosis
C. parasitic
D. dermatitis
Answer: | B |
Rudolf virchow developed the hypothesis that cells only come from other cells in what year?
A. 1868
B. 1848
C. 1858
D. 1898
Answer: | C |
Because they have free electrons, metals are able to conduct what?
A. light
B. sound
C. electricity
D. radiation
Answer: | C |
What are oil in folded layers of rock called?
A. dendrites
B. macroparticle
C. oscillations
D. anticlines
Answer: | D |
Lymph vessels are like blood vessels, except they move what instead of blood?
A. marrow
B. sperm
C. lymph
D. air
Answer: | C |
During the first several weeks of development, the cells of the endometrium nourish what?
A. embryo
B. nucleus
C. uterus
D. egg
Answer: | A |
Which type of joints do not allow any movement of the bones?
A. attached
B. fixed
C. fitted
D. linked
Answer: | B |
What type of waves carry energy through matter or space as vibrating electric and magnetic fields?
A. sound waves
B. light waves
C. electromagnetic waves
D. mechanical waves
Answer: | C |
What happens when water is removed from the endospore?
A. reversal
B. suspension
C. its metabolism halts
D. hibernation
Answer: | C |
What is the term for the intentional release or spread of agents of disease?
A. bioterrorism
B. diversion
C. pandemic
D. plague
Answer: | A |
Two important types of waves include longitudinal waves and what other kind?
A. slow
B. transverse
C. phenomena
D. irregular
Answer: | B |
The motion of stars in galaxies imply that there is about 10 times as much what as in the luminous objects we can see?
A. density
B. heat
C. light
D. mass
Answer: | D |
Polymers, ceramics, adhesives, coatings, and liquid crystals are examples of materials recently discovered or developed by what type of scientists?
A. engineers
B. chemists
C. material scientists
D. geologists
Answer: | B |
What does the urethra do?
A. filters urine and makes sperm
B. carries urine and sperm out of the body
C. stores sperm and urine
D. makes sperm and evacuates bowels
Answer: | B |
What is the term used to measure the intensity of sound waves?
A. decibel
B. phon
C. amplitude
D. hertz
Answer: | A |
What can be thought of as the most biologically productive regions on earth?
A. swamps
B. estuaries
C. forests
D. coasts
Answer: | B |
What is the scientific term for farsightedness?
A. myopia
B. hyperopia
C. micropsia
D. hypoxia
Answer: | B |
During fetal development of the heart, what does the bulbus cordis develop into?
A. left atrium
B. right ventricle
C. last ventricle
D. right atrium
Answer: | B |
A more crucial use of rc circuits for timing purposes is in the artificial pacemaker, used to control what?
A. iron levels
B. blood pressure
C. breathing rate
D. heart rate
Answer: | D |
What causes earthquakes at mid-ocean ridges to be small and shallow?
A. plates are thin , young , and hot
B. plates are thick , old , and hot
C. plates are thin , young , and cold
D. plates are thick , young , and cold
Answer: | A |
Most geological activity takes place where?
A. high altitudes
B. center of plates
C. ocean floor
D. at plate boundaries
Answer: | D |
What do we call the amount of time it will take for half of the radioactive material to decay?
A. one half-life
B. one quarter-life
C. one full-life
D. one partial-life
Answer: | A |
What are organisms that depend on other living things for food?
A. buyers
B. consumers
C. products
D. customers
Answer: | B |
Which part of the nerve cell helps transmit nerve impulses?
A. cell walls
B. long, threadlike extensions
C. dendrites
D. synapses
Answer: | B |
Mount kilimanjaro has ________ climates at the top and bottom?
A. different
B. similar
C. dangerous
D. rainy
Answer: | A |
What physical process occurs when large chunks of food are broken down into smaller pieces?
A. swallowing
B. mechanical digestion
C. chemical digestion
D. peristalsis
Answer: | B |
What is the term for the early growth and development of a plant embryo inside a seed?
A. secretion
B. germination
C. fertilization
D. rumination
Answer: | B |
Elements are either metals, nonmetals, or what?
A. reactive metals
B. unstable metals
C. partial metals
D. semimetals
Answer: | D |
Shield volcanoes often form along which locations?
A. fault lines
B. convergent boundaries
C. tectonic plates
D. divergent plate boundaries
Answer: | D |
What is the study of the vital statistics of populations and how they change over time?
A. anthropology
B. demography
C. ethnography
D. sociology
Answer: | B |
Compared to free-floating bacteria, bacteria in biofilms often show increased resistance to what?
A. acid and antibiotics
B. alcohol and detergents
C. acid and detergents
D. antibiotics and detergents
Answer: | D |
What type of energy travels in waves across space as well as through matter?
A. electromagnetic radiation
B. mechanical radiation
C. thermal energy
D. kinetic energy
Answer: | A |
If an elephant and a boy are falling towards the ground, who will land first?
A. both same time
B. neither will land
C. the boy
D. the elephant
Answer: | A |
Designed to support the weight of the upper body when sitting and transfer this weight to the lower limbs when standing, what body structure consists of four bones: right and left hip bones, sacrum, and coccyx?
A. Chest
B. lungs
C. tissues
D. pelvis
Answer: | D |
Of all the electromagnetic waves, which have the lowest frequencies?
A. ultraviolet rays
B. X-rays
C. gamma rays
D. radio waves
Answer: | D |
What do you call reversible changes that do not change matter’s chemical makeup or chemical properties?
A. potential changes
B. chemical changes
C. physical changes
D. element changes
Answer: | C |
Free atoms are spherical in shape, so the relative sizes of the elements can be compared by looking at each atom's atomic what?
A. axis
B. radius
C. weight
D. angles
Answer: | B |
What types of energy is released during a chemical reaction?
A. human, magnetic, electrical
B. temperature , electricity , light
C. heat, electricity, light
D. magnetism, electricity, light
Answer: | C |
What is the most common type of organic compound?
A. proteins
B. hydrocarbons
C. lipids
D. carbohydrates
Answer: | D |
Hormones, ions, and neurotransmitters are all types of what?
A. pathogens
B. nutrients
C. chemical signals
D. proteins
Answer: | C |
What explains why water molecules tend to stick together?
A. covalent bonds
B. mineral bonds
C. hydrogen bonds
D. helium bonds
Answer: | C |
The maturing follicle, containing a fluid-filled cavity, enlarges, forming a bulge near the surface of what?
A. the ovary
B. the pelvis
C. the vagina
D. the abdomen
Answer: | A |
Storm surge is very high water located in the low pressure eye of what?
A. earthquakes
B. eruptions
C. tornados
D. hurricanes
Answer: | D |
What is a waste product from fossil fuel burning?
A. co2 emissions
B. smog
C. oxidation
D. hydrogen gas
Answer: | A |
Carbon dioxide is an example of a material that easily undergoes what?
A. spontaneous mutation
B. sublimation
C. amplification
D. decomposition
Answer: | B |
What is the term for daily cycles of behavior, like the sleep-wake cycle?
A. variable rhythms
B. daily rhythms
C. circadian rhythms
D. behavioral rhythms
Answer: | C |
What organ senses sound?
A. teeth
B. brain
C. eyes
D. ear
Answer: | D |
The total energy assimilated by an ecosystem in a give period is known as what?
A. mean primary production
B. gross primary production
C. median primary production
D. size primary production
Answer: | B |
Class bivalvia (“two shells”) includes clams, oysters, mussels, scallops, and these?
A. grendels
B. octopuss
C. crabs
D. geoducks
Answer: | D |
When does a caldera form?
A. before an eruption
B. after a hurricane
C. after an eruption
D. when faults form
Answer: | C |
The mass lost in mass defect has gone into energy called what?
A. binding energy
B. momentum
C. enthalpy
D. kinetic energy
Answer: | A |
What is used for the fermentation process that makes beer, wine, and bread?
A. barley
B. yeast
C. whey
D. fungi
Answer: | B |
Plant viruses can seriously disrupt crop growth and development, significantly affecting our what?
A. food supply
B. air supply
C. harvest supply
D. fuel supply
Answer: | A |
In the past, biologists grouped living organisms into five kingdoms: animals, plants, fungi, protists, and what?
A. trees
B. bacteria
C. lizards
D. pathogens
Answer: | B |
What kind of joints allow for a wide range of flexibility?
A. pivot
B. lever
C. ball and socket
D. anchor
Answer: | C |
The human body wants to maintain equilibrium or balance, also known as what?
A. perfection
B. heterostasis
C. homeostasis
D. stability
Answer: | C |
Natural gas, such as those burned by gas stoves, is composed mostly of this?
A. sulfur
B. methane
C. carbon monoxide
D. oxygen
Answer: | B |
Which is the process through which leaves collect sunlight and make food?
A. compress
B. richness
C. Greenhouse
D. photosynthesis
Answer: | D |
What model describes the structure of the plasma membrane as a mosaic of components?
A. sensors mosaic model
B. solid mosaic model
C. fluid mosaic model
D. coolant mosaic model
Answer: | C |
The hot liquid rock on the surface is called what?
A. volcano
B. flow
C. lava
D. Molten
Answer: | C |
The first consumption of breast milk or formula floods the newborn’s sterile gastrointestinal tract with beneficial what?
A. bacteria
B. oxygen
C. pathogens
D. disease
Answer: | A |
Clouds are formed from what?
A. ice crystals
B. snow flakes
C. dust particles
D. water droplets
Answer: | D |
After spermatids form, they move where to mature into sperm?
A. into the volaris
B. into the prostate
C. into the vans deferens
D. into the epididymis
Answer: | D |
Matter can exist either as a pure substance or as a combination of what?
A. Different Liquids
B. much substances
C. different substances
D. different vapors
Answer: | C |
What is the separation of compounds on the basis of their solubilities in a given solvent?
A. fractional mass
B. volatile crystallization
C. solvent law
D. fractional crystallization
Answer: | D |
Triploblasts include a broad range of animals, from flatworms to arthropods to what?
A. vertebrates
B. cells
C. invertebrates
D. mammals
Answer: | A |
What is the release of particles and/or energy from the nucleus of an atom described as?
A. kinetic energy
B. radioactivity
C. momentum
D. temperature
Answer: | B |
Through which process do behaviors that improve fitness increase?
A. mutation
B. adaptation
C. succession
D. natural selection
Answer: | D |
Enzymes - proteins which speed up what?
A. crystals reactions
B. physical reactions
C. liquid reactions
D. chemical reactions
Answer: | D |
What do you call the sudden flow of mud down a slope because of gravity?
A. rockflow
B. typhoon
C. mudslide
D. mountainside
Answer: | C |
What causes acid rain, ozone depletion, and global warming?
A. water pollution
B. radiation
C. air pollution
D. ozone layer
Answer: | C |
The amniotes are distinguished from amphibians by the presence of a terrestrially adapted egg protected by what?
A. albumen
B. yolk
C. amniotic membranes
D. hard shell
Answer: | C |
The cells of what basic plant structure lack chloroplasts?
A. stem
B. leaf
C. root
D. ferns
Answer: | C |
What muscle in the chest helps inflate and deflate the lungs?
A. heart
B. diaphragm
C. cartilage
D. pectoral
Answer: | B |
Where in the lungs does gas exchange between the air and blood takes place?
A. alveoli
B. left lobe
C. ganglion
D. bronchial tube
Answer: | A |
What are hollow cylinders and are the thickest of the cytoskeleton structures?
A. vesicles
B. nucleotides
C. cytoplasm
D. microtubules
Answer: | D |
What simple sugar is the cell's primary source of energy?
A. glucose
B. nicotine
C. carbon
D. chloride
Answer: | A |
What is the approximate population on the earth?
A. 41 billion
B. 7 billion
C. 7.3 billion
D. 9 trillion
Answer: | B |
A change in the sequence of bases in dna or rna is called a what?
A. mutation
B. infection
C. accumulation
D. isolation
Answer: | A |
What is the product of microfilament movement powered by chemical energy?
A. nerve stimulation
B. muscle contraction
C. blood circulation
D. muscle fusion
Answer: | B |
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