Which of the models in Figure 52-1 would elicit an attack response from another male stickleback?
a. 1 and 2
b. 1, 2, 4, and 5
c. 2, 3, and 5
d. 1, 3, 4, 5, and 6
e. 1 through 6
D
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Metabolism describes the ability of a cell or organism to:
a. extract energy from its surroundings. b. maintain itself. c. grow. d. reproduce. e. all of these
Proteins produced by certain white blood cells may actually slow the production and maturation of other immune cells, thereby acting as regulators of the immune response. These are known as
a. cytokinins. b. complement. c. interferons. d. interleukins. e. MHC
Which group of Archaea are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal electron acceptors?
A. Thermoacidophiles B. Halophiles C. Methanogens D. Cyanobacteria
________ predict what happens, while ________ explain how and why something occurs
A) Observations; conclusions B) Theories; laws C) Observations; hypotheses D) Laws; theories E) Hypotheses; conclusions