Suppose that the human insulin protein that was produced by the bacteria was much shorter than it should be. Upon further investigation, it was found that the DNA of the human insulin gene had a mutation while in the bacterial cells. What type of
mutation could not result in these observations?
A) nucleotide insertion
B) silent mutation
C) nucleotide deletion
D) nonsense mutation
Answer: B
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Which of the following contribute to the spread of antibiotic resistance through bacterial populations?
A. horizontal gene transfer B. conjugation C. overuse of antibiotics D. transposons E. All of these choices are correct.
A species whose effect on biological diversity is disproportionate to their own abundance is termed:
a. predator. b. keystone. c. carnivore. d. producer. e. herbivore.
Which of the following elements is considered an essential micronutrient for plants?
a. phosphorus b. silver c. molybdenum d. carbon e. lead
Prozac is used as an antidepressant and acts by inhibiting the reuptake of which neurotransmitter in neuronal synapses?
A) dopamine B) serotonin C) acetylcholine D) glutamate