Insulin is produced by the:a

beta cells of the islets of Langerhans.
b. alpha cells of the islets of Langerhans.
c. cortical cells of the adrenal gland.
d. neurons in the hypothalamus.
e. lobules of the liver.


a

Biology & Microbiology

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Steroid hormones are derived from

a. free fatty acids. b. cortisol. c. tyrosine. d. cholesterol. e. alanine.

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Which of the following happens when a cell divides?

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Initial treatment for tetanus in an unimmunized person with a puncture wound is

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