A sequence of bases within a gene that does not code for protein is called a/n ________.
A. operon
B. operator
C. intron
D. promoter
E. exon
Answer: C
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How might global warming affect the precipitation?
A) Deserts will receive more rainfall. B) Storms will increase in intensity. C) Months of snowfall in higher latitudes will increase. D) Rainfall near oceans will decrease.
A small mass of specialized muscle on the back wall of the right atrium, also known as the pacemaker, is medically known as what?
A) atrioventricular node B) cardiopulmonary node C) bundle of His D) sinoatrial node
Mechanical isolation may occur when two species have different:
A) sized and shaped copulatory organs B) courtship displays C) times of the day that they are sexually active D) habitat ranges E) chemical compatibilitie of their gametes
Bacterioplankton (floating bacteria) use ________ as a sulfur source for protein synthesis.
What will be an ideal response?