The number of genes in the human genome is estimated to be:
A) 1 million. B) 3 to 6 million. C) 3 billion. D) 20,000 to 25,000.
Answer: D
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Which hormone is secreted by alpha cells of the pancreas in response to hypoglycemia?
A. glucagon B. insulin C. glucose D. cortisol E. glycogen
What role is played by the single-strand binding proteins?
a. stabilizing the helix to prevent supercoiling b. synthesizing RNA primers c. preventing the helix from reforming d. polymerizing DNA
An atom's ________ are found in its nucleus
A) neutrons and protons B) protons only C) neutrons and electrons D) electrons, protons, and neutrons
All of the following contribute to the rise of emerging diseases, except
A. the decrease in drug-resistant bacteria. B. changes in agricultural practices. C. populations are more mobile. D. human encroachment on wild habitats.