Endosperm tissue is:

a. 1/2 n
b. n
c. 2n
d. 3n
e. 4n


D

Biology & Microbiology

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A microorganism that has an optimum growth temperature of 37°C, but can survive short exposure to high temperatures is called a(n) ________.

A. thermophile B. thermoduric microbe C. facultative psychrophile D. extremophile E. psychrophile

Biology & Microbiology

What do free radicals do?

a. Improve the efficiency of aerobic respiration. b. Act as coenzymes in glycolysis. c. Damage biological molecules. d. Remove metals that combine with oxygen gas. e. Enhance enzyme activity.

Biology & Microbiology

What do primates have at their fingertips and ends of their toes, protected by flattened nails?

A. Proximal digits B. Cuticles C. Veins D. Touch-sensitive pads E. Matrices

Biology & Microbiology

Photosynthetic organisms derive their carbon from

A) carbon monoxide. B) carbon dioxide. C) hydrocarbons. D) methane.

Biology & Microbiology