Restriction (enzymes/proteases/polymerases), first isolated from bacterial cells, cut DNA molecules at specific sites.

Fill in the blank(s) with the appropriate word(s).


enzymes

Biology & Microbiology

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The study of the occurrence, distribution, and determinants of health and disease in a population is the field of

A) microbiology. B) immunology. C) epidemiology. D) virology.

Biology & Microbiology

As part of the inflammatory response, _____ engulf and destroy invading bacteria

a. histamines b. dead skin cells c. mast cells d. macrophages e. antibodies

Biology & Microbiology

The common garter snake is a predator of the rough-skinned newt. These newts produce a

potent neurotoxin that is concentrated in their skin, but garter snakes have evolved resistance to this toxin.

This is an example of __________.

a. natural selection b. sexual selection c. coevolution d. natural selection and coevolution

Biology & Microbiology

Four of the five answers listed below are amino acids. Select the exception

a. tryptophan b. valine c. alanine d. adenine e. leucine

Biology & Microbiology