Which of the following is NOT and event of the ovarian cycle?
a) FSH promotes the development of a follicle
b) the endometrium thickens
c) the corpus luetum secretes progesterone
d) ovulation of an egg occurs
Answer: b) the endometrium thickens
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When enzyme action stops due to a buildup of end product that acts as a regulatory molecule, this control is called ________.
A. enzyme repression B. enzyme induction C. noncompetitive inhibition D. competitive inhibition
Select all molecules secreted by cytotoxic T cells that are involved in killing of target cells.
A) antibodies B) complement C) interferons D) granzymes E) perforin
A flower that has sepals, petals, and stamens, but lacks carpels, is known as:
a. complete and perfect. b. complete and imperfect. c. incomplete and perfect. d. incomplete and imperfect. e. almost complete and almost perfect.
A close, non-neutral association between two organisms is termed a symbiosis.
a. true b. false