Which of the following is not involved in the regulation of the reproductive system?
A. hypothalamus
B. testes/ovaries
C. anterior pituitary
D. adrenal gland
E. nervous system
Answer: D
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Since the optic nerve must pass through the retinal layer, we all have a blind spot devoid of light receptors. This normally goes unnoticed, since the brain attempts to compensate for missing sensory information by filling it in based on surrounding patterns. Which step of the sensory pathway is represented by perceptual filling-in of the physiological blind spot?
A. interpretation B. stimulus C. transduction into receptor potential D. action potential transmission Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about retinal signaling? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The relative impermeability of membranes to
water soluble molecules is a result of
a. the nonpolar nature of water. b. the presence of large proteins that extend through both sides of membranes. c. the presence of inorganic salt crystals scattered through some membranes. d. the presence of cellulose and waxes. e. the presence of phospholipids in the lipid bilayer.
Spider crabs are an osmoconforming species, which likely means:
A. they regulate their solute concentration within their environment. B. they have the same solute concentration as their environment. C. they have the same temperature as their environment. D. they regulate their temperature within their environment.
According to the law of segregation, in an organism with the genotype Aa
A) one-quarter of the gametes get the A allele and three-quarters get the a allele. B) three-quarters of the gametes get the A allele and one-quarter get the a allele. C) all of the gametes get the A allele. D) one-half of the gametes get the A allele and one-half get the a allele. E) all of the gametes get the a allele.