An altered gene ____
a. is a mutation
b. is always harmful
c. always changes the protein
d. occurs only during meiosis
e. only occurs during base-pairing substitutions
ANSWER: a
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Applied researchers conduct their work to:
a. solve specific practical problems. b. solve any problem they face. c. answer all questions. d. advance our collective knowledge of living systems. e. prove hypotheses.
The function of the polymerase chain reaction in genetic engineering is to
A. link together newly joined fragments of DNA. B. cut DNA into many fragments. C. make multiple copies of a specific segment of DNA. D. separate fragments of DNA by their length and electrical charges. E. carry DNA into a new cell.
For the following medical conditions, describe the likely cellular organelle or structure that has been affected in such a
way as to cause the condition (note: There may be more than one organelle or structure involved): A. The sperm of a man cannot swim, thus rendering him infertile. B. A child experiences kidney failure due to Fabry's disease where the cells lining the inside of the kidney tubule accumulate abnormally large amounts of glycolipids that are usually degraded by enzymes
A person dies within minutes after ingesting cyanide because ATP is no longer being synthesized. What will be an ideal response?
A drug that blocks the NaCl cotransporter on the cortical collecting duct apical membrane will have what effect on urinary sodium and water loss?
a. Urinary sodium and water output will decrease. b. Urinary sodium and water output will increase. c. Urinary sodium output will increase but water output will decrease. d. Urinary sodium output will decrease but water output will increase.