A ________ is a sequence-specific recognition protein with endonuclease activity.

A. restriction endonuclease
B. DNA ligase
C. terminal transferase
D. DNA helicase


Answer: A

Biology & Microbiology

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The natural habitat of L. pneumophila is:

a. freshwater streams. b. the upper respiratory tract of humans and animals. c. the large intestine of humans and animals. d. foods contaminated by soil.

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In a human fetus that has the XX combination of sex chromosomes, the gonads develop into ovaries

a. True b. False

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According to Watson and Crick's model, DNA consists of two strands of nucleotides that are antiparallel. What does this mean? What evidence supports the antiparallel nature of the strands?

What will be an ideal response?

Biology & Microbiology

Which term describes the forcing out of water at the surface of a plant's leaves?

A. atmospheric pressure B. water stress C. root pressure D. transpiration E. guttation

Biology & Microbiology