Charles Darwin did NOT study the ____ during his long career
a. classification of barnacles
b. effects of earthworms on soil
c. response of plants to light
d. genetic basis of heritable traits
e. form of insectivorous plants
ANSWER: d
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The sum total of all chemical reactions occurring in a cell is called
A. metabolism. B. catabolism. C. anabolism. D. None of the choices are correct.
The greenhouse gas that has the longest residence time is
a. carbon dioxide. b. chlorofluorocarbons. c. nitrous oxide. d. water.
The force necessary to cause microtubules of cilia and flagella to slide alongside one another is
provided through the action of __________ proteins, which derive the energy to perform their work directly from __________ molecules. a. kinesin; ADP b. kinesin; glucose c. tubulin; ATP d. dynein; ATP e. dynein; ADP
Which of the following is a type of cytokine?
a. complement protein b. mast cell c. immunoglobulin d. lysozyme e. tumor necrosis factor