Amino acids and other organic molecules were formed in the laboratory of Miller and Urey from
which of the following?
a. heat, electrical discharge, water, nitric oxide, and carbon dioxide
b. heat, ultraviolet radiation, water, carbon dioxide, and amines
c. heat, infrared radiation, water, carbon dioxide, and free nitrogen
d. hydrogen, methane, water, ammonia, and electrical discharge
e. ultraviolet radiation, electrical discharge, carbon dioxide, nitrogen, and ammonia
D
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Which of these is a form of assisted reproductive technology in which a sperm cell is injected directly into an egg?
a. FSH b. IVF c. ICSI d. IUD
The metric system is the measurement system of choice for
a. scientists. b. most countries in the world. c. most peoples of the world. d. all of the above.
Microbial death occurs when there is
A. no reproduction. B. no movement. C. a decrease in size. D. a change in appearance. E. All of the choices occur.
Which of the following is an example of predation?
A) a lizard's camouflage B) a hawk swooping down quickly to capture, kill, and eat a prairie king snake C) a goldfinch feeding on the seeds of a thistle plant D) the vivid colors of the poison-arrow frog in Costa Rica E) mechanical devices, such as quills in a porcupine