A (missense/nonsense/silent) mutation of a gene usually produces a nonfunctional polypeptide.
Fill in the blank(s) with the appropriate word(s).
nonsense
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All microorganisms require
A) carbon, iron, and sodium. B) phosphorus, aluminum, and sodium. C) calcium, potassium, and magnesium. D) phosphorus, selenium, and sulfur.
Epinephrine ______.
a. is produced by the pituitary gland b. is another word meaning norepinephrine c. is secreted only by the sympathetic nervous system d. is strongly related to and has been used as an index of stress
Which of the following is not a greenhouse
gas?
a. methane b. nitrogen gas c. carbon dioxide d. nitrous oxide e. chlorofluorocarbon
What was the most significant research finding that resulted from the successful cloning of Dolly?
A. Cloned animals are capable of producing normal offspring. B. The nucleus of a fully-differentiated cell can be reprogrammed to be totipotent. C. Genetic imprinting, which occurs in adult reproductive tissue, can take months for sperm and years for eggs. D. The key to cloning success is to pick a donor cell from very early in development.