Which risk factor for cardiovascular disease cannot be controlled?

a. diet
b. life-style choice
c. genetic history
d. dietary choice
e. levels of blood lipids


ANSWER: c

Biology & Microbiology

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An organism that grows specifically on nonliving organic material is called

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Bacteria captured by white blood cells are collected in vesicles and destroyed by ____

a. smooth ER b. peroxisomes c. Golgi bodies d. ribosomes e. lysosomes

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Establishing a phylogeny for bacteria is more difficult than establishing a phylogeny for plants or animals." This statement is:

A. correct because it is difficult to obtain enough morphological data from bacteria. B. correct because bacteria can engage in lateral gene transfer. C. incorrect because bacteria are so small. D. correct because of the quick generation time of bacteria.

Biology & Microbiology

Estimates vary, but reasonable numbers for extinction rates suggest that extinction is occurring at a rate approximately

____ times above the normal background rate. a. 10 b. 100 c. 1000 d. 10,000 e. 1,000,000

Biology & Microbiology