In the process of DNA replication, nucleotides are added as DNA is synthesized. Which best describes how it is determined what nucleotides are added?
A) The nucleotides are added to exactly match the sequence on the original strand.
B) The free nucleotides that are in the greatest supply in the cell are added first.
C) The nucleotides are added based on the complementary pairing of bases.
D) The nucleotides are added randomly.
Ans: C) The nucleotides are added based on the complementary pairing of bases.
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Polar bodies
a. are dumping places for excess genetic material. b. have no known biological function. c. are produced by meiosis. d. will serve as the gametes if something happens to the egg. e. all of these are true EXCEPT “will serve as the gametes if something happens to the egg.”
Which of the following may be found in blood plasma?
A) water and proteins B) water, proteins, nutrients, and ions C) water, proteins, and ions D) water
Which polysaccharide is consumed as a source of fiber?
A. glucose B. glycogen C. starch D. cellulose E. chitin
The physical appearance and physiology of an organism, resulting from interactions of its genetic makeup and its environment, is its
(a) phenotype. (b) hybrid vigor. (c) dominance. (d) genotype.