Habituation can best be described as a form of _____
a. fixed action
b. learned behavior
c. stereotyping
d. instinctual response
e. observational learning
ANSWER: b
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Recombination between homologous chromosomes:
A. can lead to a gene conversion event if the region between the two Holliday intermediates contains base pair differences. B. uses extended synthesis-dependent strand annealing (ESDSA) rather than synthesis-dependent strand annealing (SDSA). C. can occur at completely random sites on the chromosome; there is no apparent regulation of the process. D. occurs between sister chromatids and nonsister chromatids with equal frequency. E. None of the choices given is true.
The medication known as mifepristone, or RU-486, acts by
A. preventing an egg from maturing and being released-essentially a stronger regular birth control pill. B. killing sperm as they enter the female reproductive tract. C. destroying the embryo which in turn causes a spontaneous miscarriage. D. blocking the progesterone receptors of cells in the uterine lining and causes the loss of an implanted embryo. E. preventing development of a uterine lining.
A developing nation with a rapidly increasing population is reaching its carrying capacity. What change(s) could allow it to increase its carrying capacity? (Check all that apply.)A) A cultural shift to eating less meatB) Education for womenC) Greater yield from agricultural cropsD) Increased availability of birth controlE) Water treatment plants
What will be an ideal response?
In addition to being light and abundant, the capacity of the carbon atom to form _____ bond(s) makes it critical for the chemistry of life.
A) 1 B) 2 C) 3 D) 4