All atoms of an element have the same number of ________
A) protons plus neutrons
B) protons
C) electrons
D) neutrons
B
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___________ are the building blocks of DNA.
A. genes B. double helices C. amino acids D. nucleotides E. chromosomes
Genetic engineering has been used to
a. induce bacteria to mass-produce human insulin. b. produce a vaccine against hoof-and-mouth disease. c. create mice with altered genomes so we can model certain human diseases. d. create plants that are more resistant to certain pests or herbicides. e. all of these
The hormone that is antagonistic in action to
glucagon is
a. norepinephrine. b. insulin. c. thyroxine. d. epinephrine. e. mineralocorticoids.
_______________ uses uracil as a substrate.
a) DNA Polymerase III b) Peptidyl transferase c) Aminoacyl-tRNA synthase d) RNA Polymerase