Which of the following are the four classes of biological molecules?
a. nucleic acids
b. RNA
c. carbohydrates
d. sucroses
e. proteins
f. lipids
g. DNA
h. cholesterols
Answer: a, c, e, and f (nucleic acids, carbohydrates, proteins, and lipids)
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The rates of evolutionary change in DNA:
A. are highly variable among different gene families. B. are constant in gene families with a diversity of members. C. can only be determined in conserved genes. D. are constant among different gene families and thus are used to estimate the time of divergence. E. are zero.
The conditions normally present in food such as moisture, acidity and nutrients are referred to as
A. extrinsic factors. B. intrinsic factors. C. endogenous factors. D. exogenous factors
A major way that the human genome differs from the genomes of other primates is that
A) the human genome has many deletions compared to the other primate genomes. B) the human genome has many duplicated regions compared to the other primate genomes. C) the human genome has many more C and T bases in its genes than the other genomes. D) human proteins are much larger than their counterparts in the other primate species.
What are the disadvantages to being a social animal?
What will be an ideal response?