Ultraviolet light causes pyrimidine dimers to form in DNA. Some individuals are genetically incapable of repairing some dimers at "normal" rates. Such individuals are likely to suffer from ________
A) SCID
B) xeroderma pigmentosum
C) Huntington Disease
D) phenylketonuria
E) muscular dystrophy
B
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Bacteria are single-celled organisms with a single chromosome found in which cell space?
A) nucleus B) nucleolus C) nucleoid D) nuclear envelope E) mitochondria
The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called
A) hibernation. B) torpor. C) heterothermy. D) diapause.
Regular, consistent intervention, such as some modern logging practices, may create which type of stable community?
A) immature B) evergreen C) forest D) recovered E) varied
How many molecules of C2 acetyl group are produced from six molecules of glucose 6 C6H12O6 during aerobic respiration?
a. 10 b. 12 c. 15 d. 20