ATP contains
a. alanine.
b. arginine.
c. ribose.
d. tyrosine.
e. glucose.
Answer: c
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Metamorphosis is
A. changing of one body form to another within a species, such as the change from an aquatic tadpole to a terrestrial frog. B. an intermediate condition, such as length of legs in mice between longer legs of some mice and shorter legs in others, a condition caused by Hox genes. C. the developmental changing of a scale to a feather. D. the evolutionary transition from fishes to amphibians.
The human chromosomes that do not determine gender are
A. not found in pairs. B. the "X" and "Y" chromosomes. C. autosomes. D. called sex chromosomes. E. None of the answers are correct.
Why can measles virus and poxvirus infect many human tissues and influenza virus can infect only one type of tissue? What will be an ideal response?
An open circulatory system usually consists of which of the following?
a. blood b. pumping organ c. arteries d. veins e. hemocoel