The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called ________.
A. amphibolism
B. catabolism
C. anabolism
D. biosynthesis
E. metabolism
Answer: A
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Which statement characterizes human population growth?
a. The rate of human population growth appears to be declining. b. The rate of human population growth appears to be increasing. c. The rate of human population growth is exponential. d. Human birth rates are higher than death rates. e. Human death rates are higher than birth rates.
You modify the primary sequence of an enzyme in a region that will be the active site when the protein
is properly folded. What is the predicted outcome of this change?
a. The enzyme will not properly bind to the substrate. b. The enzyme will not be able to bind an allosteric inhibitor. c. The enzyme will have an increased rate of activity. d. There will be no change in the enzyme's function. e. The enzyme will bind the substrate but not be able to release the products.
Why is light a source of energy?
a. It excites an electron within a pigment molecule, which then serves as a source of light energy that can be used for work. b. It excites an electron within a pigment molecule, which then serves as a source of heat energy that can be used for work. c. It excites an electron within a pigment molecule, which then serves as a source of potential energy that can be used for work. d. It excites an electron within a pigment molecule, which then serves as a source of kinetic energy that can be used for work.
Major regional groups of interacting terrestrial ecosystems, characterized by climate and geography, are called
A. taigas. B. estuaries. C. tundras. D. biospheres. E. biomes.