Compounds released from cells that influence the same cell are called ________.
A. steroidal hormones
B. tropic hormones
C. neuropeptides
D. autocrine chemical messengers
E. paracrine chemical messengers
Answer: D
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True or False? The thymus is also an endocrine gland and is located in the abdomen. Select one:
a. true b. false
Which of the following is not an example of a physiological gradient?
A. Concentration B. Pressure C. Electrical D. Thermal E. Tissue
Transamination
A. results in free fatty acids. B. requires glucose. C. can be used to synthesize essential amino acids. D. involves removing an amine group from an amino acid. E. directly produces urea.
Cells with a high rate of secretion use up to 75% of the ATP they generate just to synthesize new chemical compounds
a. True b. False Indicate whether the statement is true or false