Fishes exhibit a method of ventilating their gills termed "tidal ventilation."
Answer the following statement true (T) or false (F)
False
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Allergy is a(n) ____ response to ____ antigens
a. overactive; environmental b. underactive; environmental c. overactive; cellular d. underactive; cellular e. normal level; microbial
How do corallivores keep certain corals from being overgrown? a. None of these choices
b. Moves sediment towards slow growing corals. c. Prevent larval corals to settle in certain areas. d. Feed on fast-growing, branching corals.
Which of the following does not represent a method by which cells regulate enzyme activity?
a. controlling the intracellular concentration of the enzyme b. feedback inhibition of enzymes c. the binding of allosteric regulators to allosteric sites on the enzyme d. differential gene expression of the genes that produce enzymes e. heat denaturation of the enzyme
What are attributes of oral contraceptives? (Check all that apply.)A) They contain a progesterone and sometimes an estrogen analogue.B) The progesterone is in the 21-day pills, and the estrogen is in the 7-day pills.C) They help protect against ovarian and endometrial cancer.D) They are appropriate for use by smokers over age 35.E) They have a low failure rate of only 1% to 5% a year.F) They act by inhibiting LH and FSH secretion, inhibiting ovulation.
What will be an ideal response?