DNA replication proceeds ________

A) semiconservatively
B) unidirectionally
C) dispersively
D) discontinuously
E) progressively


Answer: A

Biology & Microbiology

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Identify the location of the disulfide bond in the figure, located at the bottom of the third transmembrane segment. What is the name of the amino acids that are forming this bond?

A) cytosine B) aspartic acid C) cysteine D) glycine

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Which activities are required for nick translation?

A. 3'-5' exonuclease and 5'-3' polymerase B. 5'-3' exonuclease and 5'-3' polymerase C. 5'-3' exonuclease and 3'-5' polymerase D. 3'-5' exonuclease and 3'-5' polymerase E. 3'-5' exonuclease and 5'-3' exonuclease

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A unique characteristic of plant cells is their

a. ability to photosynthesize. b. ability to carry out cellular respiration. c. ability to continuously grow and generate new organs throughout their life cycle. d. ability to form defensive compounds. e. ability to protect themselves through movement

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How does a population differ from an ecosystem?

A) An ecosystem and a population are identical; they are two terms for the same concept. B) A population consists of all living organisms in the area, whereas an ecosystem consists of all living and nonliving aspects of an area. C) An ecosystem includes a community, whereas a population does not. D) A population consists of all living organisms in an area, whereas an ecosystem consists of only one species.

Biology & Microbiology