Which type of base-pair substitution mutation has no effect on the amino acid sequence of a protein?
A) Missense mutation
B) Nonsense mutation
C) Silent mutation
D) Frameshift mutation
E) None of these choices
C
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Restriction enzyme-generated DNA fragments of different lengths from the same region of the genome are called
a. DNA elements b. endonuclease sites c. restriction sites d. restriction fragment length polymorphisms e. restriction elements
What molecular complex is shown in the illustration?
a. Complex II
b. Ubiquinone
c. ATP synthase
d. NADH
Why do heavy consumers of alcohol gain weight?
a. Alcohol contains an excessive amount of calories. b. Ethanol is converted directly to fat molecules. c. Oxygen is diverted from breaking down fatty acids to break down ethanol. d. Ethanol inhibits the action of peroxisomes which work to break down fatty acids. e. The hydroxyl group on ethanol is transferred to fatty acids causing them to be stored as fat.
What is the principle purpose of the muscular system?