Most causes of speciation are relatively slow, in that they may take many generations to see changes, with the exception of _____
A) polyploidy
B) reinforcement
C) colonization
D) natural selection
Answer: A
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The genetic information of an organism is coded within that organism's
a. DNA. b. carbohydrates. c. lipids. d. proteins. e. cell membranes.
A(n) ________ increases the rate of a reaction without being permanently altered by the reaction.
A. catalyst B. catalyzer C. enzyme D. rate increaser
Arrange the following from the ecosystem with the smallest average NPP to the ecosystems with the
largest NPP. 1) Lake 2) Savanna 3) Estuary 4) Tropical rain forest 5) Open ocean a. 1, 2, 3, 4, 5 b. 2, 1, 4, 3, 5 c. 2, 1, 5, 3, 4 d. 5, 2, 1, 3, 4 e. 5, 1, 2, 3, 4
A soluble protein or glycoprotein released by one cell population to signal between cells is called
A) An enzyme B) A cytokine C) A hormone D) None of the above