Which of the following best describes the neuroendocrine-to-endocrine pathway of hormone action?
A) A neural organ that produces hormones regulates another gland through the release of hormones into the circulation that travel to the affected gland.
B) A neural organ that produces hormones releases its hormones directly into another gland that it regulates.
C) A gland releases hormones directly into a neural structure, thus regulating neural functions.
D) A gland exhibits negative feedback on the nervous system by releasing hormones into neural tissue both directly and indirectly through the circulation .
Answer: A
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In rabbits, there are four alleles at the c locus. Arranged in dominance sequence they are:C
(agouti), cch(chinchilla), ch(Himalayan), and c (albino) (a) Is it possible to cross two agouti rabbits and produce both chinchilla and Himalayan offspring? (b) Is it possible to cross two chinchillas and produce 1/2 chinchilla and 1/2 Himalayan? What will be an ideal response?
Under which condition(s) might one have an amino acid substitution in a protein that does not result in an altered phenotype?
What will be an ideal response?
Which of the following statements accurately reflects the process of glycolysis?
A. Glycolysis uses molecular oxygen; however, it occurs in anaerobic environments. B. Glycolysis uses no molecular oxygen; however, it can occur in aerobic environments. C. Glycolysis uses no molecular oxygen and occurs in the mitochondria. D. Glycolysis uses molecular oxygen and occurs in aerobic environments.
Which of the following characteristics evolved independently in mammals and birds?
A) amniotic eggs B) jaws C) bone D) endothermy