The Jones family has a plan to encourage good behavior in their children. When a child completes daily chores, that child receives a gold star. The earning of fourteen gold stars allows the child to choose between a visit to the movie theatre or the park. This is an example of
A. polyanthus.
B. classical conditioning.
C. operant conditioning.
D. insight learning.
E. imprinting.
Answer: C
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All of the following are mechanisms or adaptations of organisms to the arrival of colder
winter temperatures EXCEPT
a. hibernation. b. reduction in metabolic rates. c. migration. d. growth.
Diplontic life cycles are characteristic of:
a. animals b. plants c. fungi d. single-celled eukaryotes e. prokaryotes (bacteria and archaea)
Senescence in plants usually involves
A) the presence of cytokinins. B) the development of photosynthetic enzymes. C) the formation of an abscission layer. D) shade from other plants. E) apical dominance.
Lipid-linked proteins are classified as peripheral membrane proteins because the polypeptide chain does not pass through the bilayer.
a. true b. false