If carbon has an atomic number of 6 and an atomic mass of 14, how many neutrons does it have?
A. 8
B. 7
C. 6
D. 14
E. There is not enough information to determine this.
Answer: A
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The evolutionary origin of mitochondria is demonstrated by which of the following key genomic characteristics?
A) variable numbers of protein-encoding genes B) large stretches of AT-rich DNA C) linear and circular genome structure in different organisms D) rRNA genes most closely related to Bacteria
Genetic drift has an especially significant effect in what kind of populations?
A. populations that are large B. populations that are small C. populations with high genetic variability D. populations that are in Hardy-Weinberg equilibrium E. populations that are migrating
When the body's blood glucose level rises above normal, which of the following hormones is produced?
A. glucagon B. epinephrine C. insulin D. norepinephrine E. prolactin
Molecules are made up of
A. atoms. B. cells. C. organisms. D. organs. E. populations.