The type of movement of molecules that is specific and passive, and which becomes saturated if all of the protein carriers are in use is
A. osmosis.
B. exocytosis.
C. endocytosis.
D. active transport.
E. facilitated diffusion.
Answer: E
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The active site of an enzyme
a. binds the reactants of a chemical reaction. b. does not change shape during the reaction. c. is necessary for regulation of the enzyme activity. d. can bind many different reactants. e. only acts when it is unoccupied.
Which of the following do lobsters and clams
have in common with fishes?
a. an exoskeleton b. a two-chambered heart c. internal gills d. skin as a respiratory surface e. more than one of these
People often pick up and "adopt" baby wild animals, which then leads to a set of dependent behaviors that the young animal learns very rapidly. The dependent behaviors will be retained through life, endangering the survivability of the animal around people or in the wild. This behavior is learned by
A. observation. B. imprinting. C. reflex. D. habituation. E. taxis.
Which kingdom of Eukarya consists primarily of unicellular organisms?
A) Plantae B) Bacteria C) Fungi D) Protista