Which of these would be an effect of an excess of thyroid hormones?
A) More thyroid hormone would be produced.
B) A would release less TRH.
C) B would release more TSH.
D) The thyroid would swell and produce a goiter.
B) A would release less TRH.
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Recombination frequency differs between males and females. Which sex has a higher rate of recombination, heterogametic (males) or homogametic (females)?
What will be an ideal response?
The sac fungi are characterized by sexual reproductive structures called:a
asci. b. basidia. c. conidia. d. gemmae. e. conidiophores
Which of the following statements regarding enzyme function is false?
A) An enzyme's function depends on its three-dimensional shape. B) Enzymes are very specific for certain substrates. C) Enzymes are used up when they catalyze a chemical reaction so must be synthesized for each new chemical reaction. D) Enzymes emerge unchanged from the reactions they catalyze.
Which pair of structures, found in different organisms, both serve to increase the absorptive surfaces of the intestines?
a. choanocytes and gastric ceca b. proventriculus and villi c. choanocytes and proventriculus d. typhlosoles and villi