What is the structure labeled F in the accompanying figure?
a. cytoplasm
b. nucleoid
c. plasma membrane
d. capsule
e. pilus
ANSWER: e
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All of the following involve molecular biology techniques except
A. ligating DNA fragments together. B. creation of Okazaki fragments. C. using restriction enzymes to cut specific sequences of DNA. D. using a DNA polymerase to copy DNA via PCR.
DNA replication is ____.
A. redundant B. semiconservative C. progressive D. conservative E. repetitive
Lenski and Travisano compared what happened to the size of cells in 12 replicate lines of E. coli. The results of the experiment graphed in the figure above indicate that:
a. there is a competition for limited resources in nature. b. the average cell volume decreased substantially over the first 2,000 to 3,000 generations of the experiment. c. the average cell volume increased substantially over the first 2,000 to 3,000 generations of the experiment. d. A and B. e. A and C.
In what way are single-celled slime mold amoebas and individual honeybees (social insects that live in colo-nies) alike?
a. Signals cause them to aggregate though they usually live alone. b. They are both examples of loss of complexity. c. Individuals always live in groups. d. Some individuals give up independent replication in the larger group.