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cbrd45
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module4
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1992-01-01
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NEW SET
A
For each question, indicate whether:
(A) choices 1, 2, and 3 are correct
(B) only choices 1 and 2 are correct
(C) only choices 2 and 3 are correct
(D) only choice 1 is correct
(E) only choice 3 is correct
next
1
1. The development of the electron microscope has made it possible to
observe for the first time
(A) a proton
(B) a virus
(C) a mitochondria
next
c
0
2
Correct.
next
wrong answer explanation
2
(C) Live specimens, however, cannot be observed.
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2
2. Which structure(s) is(are) present in the chlamydomonas (a unicellular
flagellate green algae)?
(1) kinetosomes
(2) centriole
(3) chlorophyll
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a
0
3
Correct.
next
wrong answer explanation
3
(A) All three structures are present.
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3
3. Which of the following organisms contain(s) chloroplasts?
(1) chlamydomonas
(2) euglena
(3) mushroom
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b
0
4
Correct.
next
wrong answer explanation
4
(B) Chlamydomonas and Euglena contain chloroplasts; the mushroom does not.
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4
4. Which of the following contain(s) no nitrogen?
(1) DNA
(2) protein
(3) carbohydrates
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e
0
5
Correct.
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wrong answer explanation
5
(E) Carbohydrate molecules contain carbon, hydrogen, and oxygen.
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5
5. Processes that take place in both plants and humans include:
(1) respiration
(2) formation of proteins
(3) photosynthesis
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b
0
6
Correct.
next
wrong answer explanation
6
(B) Humans do not photosynthesize.
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6
6. Which disease(s) is(are) caused by vitamin deficiency?
(1) exophthalmic goiter
(2) pellagra
(3) sterility
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c
0
7
Correct.
next
wrong answer explanation
7
(C) Exophthalmic goiter is caused by hyperthyroidism.
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7
7. Hormones:
(1) are carried in the bloodstream
(2) vary greatly in chemical composition
(3) play a major role in feedback systems
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a
0
8
Correct.
next
wrong answer explanation
8
(A) Hormones affect varied cell types.
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8
8. ADP:
(1) is just as effective as ATP
(2) plays an important role as an energy source in muscle contraction
(3) stores energy by accepting phosphate groups
next
e
0
B
Correct.
next
wrong answer explanation
B
(E) ATP delivers more energy than ADP.
NEXT
NEW SET
B
For each question, indicate whether:
(A) choices 1, 2, and 3 are correct
(B) only choices 1 and 2 are correct
(C) only choices 2 and 3 are correct
(D) only choice 1 is correct
(E) only choice 3 is correct
next
1
9. Which animal(s) is(are) now extinct?
(1) passenger pigeon
(2) archaeopteryx
(3) duck-billed platypus
next
b
0
2
Correct.
next
wrong answer explanation
2
(B) The duck-billed platypus is an egg-laying mammal that is not extinct.
next
2
10. A virus may contain:
(1) protein
(2) DNA
(3) ribosomes
next
b
0
3
Correct.
next
wrong answer explanation
3
(B) A virus does not contain any cytoplasm or any of the cytoplasm's
organelles.
next
3
11. A closed circulatory system is characteristic of:
(1) arthropods
(2) annelids
(3) chordates
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c
0
4
Correct.
next
wrong answer explanation
4
(C) A closed circulatory system means that the blood circulates in tubes.
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4
12. A color-blind male marries a female heterozygous for color blindness.
An offspring of theirs could be:
(1) a color-blind male
(2) a color-blind female
(3) a normal carrier female
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a
0
5
Correct.
next
wrong answer explanation
5
(A) All of the choices are possible.
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5
13. Which of the following is(are) characteristic of the class Reptilia?
(1) six-toed limbs
(2) external fertilization
(3) eggs with shells
next
e
0
6
Correct.
next
wrong answer explanation
6
(E) Reptiles fertilize internally.
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6
14. Which of the following is(are) required for the dark stage of
photosynthesis?
(1) water
(2) chlorophyll
(3) ATP
next
e
0
7
Correct.
next
wrong answer explanation
7
(E) ATP is required to donate energy to start the cycle.
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7
15. Which of the following is(are) characteristic of the class Amphibia?
(1) skin without scales
(2) upper jaws fused to skull
(3) external fertilization
next
a
0
8
Correct.
next
wrong answer explanation
8
(A) All three characterize Amphibia.
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8
16. Which of the following is(are) required for the light stage of
photosynthesis?
(1) ATP
(2) water
(3) chlorophyll
next
c
0
C
Correct.
next
wrong answer explanation
C
(C) Water donates the hydrogen molecule, and chlorophyll supplies the energy.
end