If an experimenter wants to use the GFP method but needs to detect the presence or absence of several proteins at the same time, he can take advantage of mutational variants of GFP that emit what?
What will be an ideal response?
other colors
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Which of the following bases is not found in RNA?
A. adenine B. guanine C. thymine D. cytosine E. uracil
To increase the chance of detecting carcinogens in the Ames test, the test substance is treated with
A. penicillin. B. heat. C. ground-up rat liver. D. reverse transcriptase. E. penicillin AND heat.
Which type of microscopy enhances and amplifies slight changes in the phase of transmitted light?
A) differential interference contrast microscopy B) digital video microscopy C) fluorescence microscopy D) phase-contrast microscopy E) both differential interference contrast microscopy and phase-contrast microscopy
Evidence suggests that the intention to start eating triggers a decline in blood glucose. Which of the following observations supports this view?
(a) the glucose levels in the extracellular fluids that surround CNS neurons greatly decline just after eating commences (b) a rapid decline in blood glucose occurs just before eating commences (c) if an expected meal is not served, blood glucose rarely returns to its previous level (d) eliminating the premeal drop in blood glucose eliminates the meal