A researcher is looking for met- strains. He compares two plates. One plate has colonies growing on complete
medium. The other plate has colonies growing on methionine deficient medium. How can the researcher determine which
colonies are met-?
a. The colonies growing on the methionine-deficient plate are met-.
b. Colonies growing on complete medium but not on methionine-deficient medium are met-.
c. More experiments must be performed to identify the met- colonies.
d. All of the colonies growing on complete medium are met-.
e. Colonies growing on methionine-deficient medium but not on complete medium are met-.
ANSWER: b
You might also like to view...
Most climate models predict that during the 21st century mean global temperature will increase by:
A. 2–5°C B. 1–3°C C. 5–7°C D. 7–10°C E. 12–15°C
In studying the medium ground finch on Daphne Major, the Grants noted that each generation of finches had beaks
A. larger than those of the previous generation. B. best suited for their parents' environment. C. best suited for their current environment. D. smaller than those of the previous generation.
If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up?
A) H and O both in glucose B) H in glucose; O in water C) H in water; O in glucose D) H in glucose and water; O in O2
MADS-box genes affect:
a. only flowers. c. leaves, roots, and flowers. b. segmentation in animals. d. early development.