The site where the two original DNA strands are separated and active replication occurs is called the
A. replisome.
B. lagging strand.
C. sliding clamp subunit.
D. replication fork.
E. primosome.
Answer: D
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The embryo develops from cells of the
a. blastocyst outer layers. b. blastocyst inner cell mass. c. gastrula mesoderm. d. gastrula ectoderm. e. gastrula endoderm
In Selye's general adaptation syndrome theory of stress, the initial response of the autonomic nervous system to a stressor occurs in the _____ phase.
A. resistance B. primary response C. global responsiveness D. alarm reaction
The process of using just enough heat to kill most (but not all) of the bacteria that cause spoilage in a beverage was developed by
a) Pasteur. b) Ehrlich. c) Lister. d) Koch.
Reduced O2 (5% to 10%) and increased CO2 (8% to 10%) produce an environmental condition that best suits which type of organism?
a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles