The ____________ gland in the neck produces several important hormones, including thyroxine, triiodothyronine, and calcitonin.
Fill in the blank(s) with the appropriate word(s)
Answer: Thyroid
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DNA synthesis requires a(n) ____ primer
Fill in the blank(s) with the appropriate word(s).
Friedrich Miescher, after he began to study the chemical composition of the nucleus, was one of the first to ____
a. propose the nuclear structure of the H5N1 virus b. discover that the nucleus contained DNA but no proteins c. discover that human and mice chromosome chemistry differs greatly d. isolate DNA and propose its structure e. isolate and purify a cellular organelle
The sharp peak of estradiol secretion during the ovarian cycle
A. stimulates the secretion of LH and ovulation. B. stimulates growth of the uterine lining. C. inhibits progesterone production. D. inhibits the secretion of LH and FSH. E. stimulates completion of meiosis I.
If you isolate a pancreatic beta cell and put it in the proper growth conditions, it will divide by mitosis and produce new beta cells, but it will not produce pancreatic alpha cells or pancreatic cells that release digestive enzymes. The pancreatic beta cell is
A. unipotent. B. pluripotent. C. impotent. D. totipotent. E. multipotent.