If an average female A. afarensis weighed 24 kg, what would you estimate the weight of an average male to be?
A) 24 kg B) 36 kg C) 66 kg D) 18 kg
Answer: B
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The smallest subatomic particle is the ________.
A. proton B. electron C. neutron D. ion E. isotope
Usually, bacteria only make tryptophan when tryptophan is absent or available in low concentration. However, a particular bacterial mutation makes tryptophan all the time whether or not tryptophan is present. What could explain this phenotype?
A) trpA is mutated B) trpE is mutated C) trpD is mutated D) the antiterminator hairpin is unable to form E) the terminator hairpin is unable to form
Please match the following nutritional types with the statements that most accurately describe them, to test your understanding of the main categories of nutritional types among organisms.
Chemotroph A) An organism that uses inorganic carbon dioxide as its carbon source B) An organism that must obtain its carbon in an organic form C) An organism that gains energy from chemical compounds D) An organism that acquires energy from light
Although lifestyle choices can't, in general, change our genomes, they can: (Select all correct choices)
A. change the physiological states of our cells, which in turn affects post-translational gene regulation. B. increase the rate at which some genes are transcribed. C. decrease the rate at which some genes are transcribed.