How many sex chromosomes are in a human gamete?
A) one
B) two
C) three
D) four
Answer: A
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What is the advantage of forcing materials to travel through cells instead of between cells?
A. Cells can control which materials are transported. B. Exposure to toxins is limited. C. Exposure to bacteria or viruses is limited. D. All of the above are correct.
Polyploidy:a
may be the result of more than one sperm fertilizing an egg. b. is not lethal in humans. c. may be the result of the failure of a chromosome to separate during meiosis. d. can be due to nondisjunction for a chromosome. e. is the mechanism of dosage compensation
Virulence factors include all the following, except
A. exoenzymes. B. capsules. C. endotoxin. D. ribosomes. E. exotoxin.
Organisms that require organic sources of carbon and energy are called (chemoheterotrophs/chemoautotrophs/autotrophs)
What will be an ideal response?