_____ are proteins that function as catalysts to speed up chemical reactions.
a) Photosystems
b) Enzymes
c) Monomers
d) Pigments
Ans: b) Enzymes
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Which of the following organisms would likely be a K-strategist?
A. humans B. pine trees C. salmon D. frogs E. grasshoppers
Which statement is true for most steroid hormones?
a. They dissolve readily in the blood. b. They have no trouble entering their target cells. c. They find and react with surface receptor molecules. d. They cannot easily enter a target cell. e. They developed from amino acids.
Phytophthora infestans is a pathogen that attacks a variety of plants. This pathogen is an example of what type of protist?
A. algae B. fungus-like protists C. protozoans D. periphyton E. plankton
An ultimate cause of behavior is:
a. genetic processes. b. developmental processes. c. physiological processes. d. evolutionary pressures. e. immediate causes