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cbrd45
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module2
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1992-01-01
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186 lines
NEW SET
A
Type the letter of the best answer.
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1
1. When bacteria of decay digest meat, the digestion's end products enter
the bacteria by diffusion because:
(A) bacteria of decay have completely permeable cell membranes
(B) bacteria of decay are anaerobic
(C) digestive enzymes cannot pass through bacteria cell membranes
(D) end products are more concentrated outside the bacteria than inside
(E) bacteria are expending energy to accomplish it
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d
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2
Correct.
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wrong answer explanation
2
(D) Concentration of the end products is higher outside the cell membrane.
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2
2. Of the following animal phyla, the one that is probably more varied
and abundant now than in previous geological periods is the:
(A) Protozoa
(B) Bryozoa
(C) Brachiopoda
(D) Echinodermata
(E) Annelida
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a
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3
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wrong answer explanation
3
(A) Of the choices given, only the protozoans exist today in larger
numbers and more varied species.
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3
3. A series of conditioned responses in which each response becomes a
stimulus for the succeeding response is a type of reaction called:
(A) habit
(B) conditioned reflex
(C) instinct
(D) automatic behavior
(E) simple reflex
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a
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4
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wrong answer explanation
4
(A) It is always easier for someone to repeat a given response than to
perform the action for the first time. This principle underlies the
responses of habit, memory, and learning.
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4
4. Which one of the following is an intermediate product of metabolism
that cells can convert to protein, fat, or carbohydrate?
(A) vitamin K
(B) pyruvic acid
(C) carbonic acid
(D) glucose-6-phosphate
(E) vitamin E
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b
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5
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5
(B) Pyruvic acid is necessary for carbohydrate combustion to occur.
It is also a key ingredient in the combustion of many other types of fuels.
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5
5. Which is the most accurate statement regarding heart rate in small birds?
(A) The size of species and heart rate are independent.
(B) The smaller the species, the less rapid the rate.
(C) The smaller the species, the more rapid the rate.
(D) The smallest species has the fastest maximum rate.
(E) The larger the species, the more moderate the rate.
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c
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B
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wrong answer explanation
B
(C) The hummingbird exhibits a basal heart rate of 615.
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NEW SET
B
Type the letter of the best answer.
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1
6. Which of the following instruments has played a major role in permitting
scientists to discover the chemical makeup of a mitochondrion?
(A) electron microscope
(B) phase microscope
(C) microdissection apparatus
(D) microtome
(E) ultracentrifuge
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e
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2
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2
(E) The chemical makeup of many cytoplasmic organelles has been determined
by ultracentrifugation.
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2
7. One function of the human kidney is:
(A) to allow excess amino acids in the glomerulus to filter into the
urine
(B) to reabsorb nitrogenous compounds when their concentration in the
blood plasma falls below a critical level
(C) to reabsorb less water than it eliminates
(D) to reabsorb more water than it eliminates
(E) none of these
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d
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3
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3
(D) Waste products are greatly concentrated in urine.
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3
8. The category of protista includes:
(A) algae, fungi, and protozoa
(B) algae, fungi, and bryophytes
(C) fungi, bryophytes, and protozoa
(D) protozoa, bryophytes, and tracheophytes
(E) algae, bryophytes, and spermatophytes
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a
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4
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4
(A) Organisms possessing characteristics of both/neither plants and/nor
animals are placed in the Protista kingdom.
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4
9. A KILLER trait in paramecium is associated with which one of the
following?
(A) nucleus and kappa
(B) nucleus and kinetin
(C) cytoplasm
(D) trichocysts
(E) cell membrane and cytoplasmic organelles
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a
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C
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wrong answer explanation
C
(A) If kappa particles are produced in a paramecium, they are distributed
to the daughter cells.
end