Of all organisms, prokaryotes are the ____.

A. smallest
B. least abundant
C. least metabolically diverse
D. least widespread
E. most internally complex


Answer: A

Biology & Microbiology

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Which of the following best describes the hydrophilic component of cholesterol?

A. a hydroxyl group only B. a phosphate group only C. a phosphate group and a chemical group called choline D. a group of four planar rings and a hydroxyl group E. a single hydrocarbon tail

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Phosphorus can be obtained from organic sources only.

Answer the following statement true (T) or false (F)

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Which offspring in the illustration above are homozygous recessive for both traits?

a. PPTT b. ppTT c. PpTt d. pptt e. PPtt

Biology & Microbiology

All of the following are nonspecific defense mechanisms or barriers used by an animal except:a

acid secretions of the stomach. b. inflammation. c. antibodies. d. mucus in the respiratory tract. e. skin.

Biology & Microbiology