Instructions
Which of the following statements is NOT true of conjugation?
a) It requires cell‐to cell‐contact. b) It may result in the transfer of large amounts of DNA. c) It proceeds from a donor to a recipient. d) It requires competent cells.
2. Yeast cells produce ethanol from acetaldehyde because
a) they can derive energy directly from the ethanol b) ethanol production allows the electron acceptor pool to be replenished c) it improves the quality of their environment d) acetaldehyde is toxic to yeast cells
3. Iodine deficiency promotes the formation of enlarged thyroid glands (goitre) because
a) more thyroid hormones are now produced in the thyroid gland. b) the thyroid gland switches to production of a different hormone. c) reduced levels of thyroid hormones fail to prevent stimulation of thyroid gland by TRH and TSH. d) iodine now needs to be synthesized in the thyroid gland.
4. Bateman’s gradient suggests that
a) the sex that invests most heavily in raising offspring will have fewer mating partners. b) males are more flamboyant than females. c) females are flamboyant than males. d) the sexes are equal.
What is a viral receptor?
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