Which of the following is the correct sequence
involved in the regulation of organ systems?
a. stimulus, receptor, integrator, response, effector
b. stimulus, response, integrator, receptor, effector
c. stimulus, receptor, integrator, effector, response
d. stimulus, integrator, receptor, effector, response
e. stimulus, effector, integrator, receptor, response
Answer: c
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When retreating glaciers carved deep coastal valleys they created:
a. fjords. b. salt-wedge estuaries. c. well-mixed estuaries. d. tectonic estuaries. e. drowned river valleys.
If water is scarce, a plant's guard cells will and the stomata will .
A. swell; close B. collapse; open C. collapse; close D. swell; open E. None of the answer choices is correct.
For a particular gene, the frequency of the dominant allele H is 0.65. The total population size is
10,000 individuals. Also, the homozygous recessive condition results in living but sterile offspring. Fill in the table of values for the generations indicated:Generation p q p2 2pq q2 1 2 Does this population exhibit Hardy-Weinberg equilibrium? Why or why not? If not, what assumptions does the Hardy-Weinberg principle make that appear to be inapplicable in this situation? What will be an ideal response?
Carbon exists in the atmosphere. It could have come from all of the following sources EXCEPT:
a) Cellular respiration by plants and animals b) Burning of biofuels c) Burning of fossil fuels d) Photosynthesis by plants