How is bacterial translation different from eukaryotic translation?
a. mRNA is read 3' to 5'.
b. Bacteria can begin translation before transcription has terminated.
c. Bacterial translation does not involve ribosomes.
Answer: b. Bacteria can begin translation before transcription has terminated.
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You’ve heard the phrase, “Feed a cold, starve a fever,” your whole life, and you’ve always considered it dubious advice at best; after all, how are you supposed to recover from any infection if you’re undernourished? After reading this module, however, you realize that one of your organs may be following a portion of this folk remedy despite your opinion. Which statement is true?
a. In response to a cold, the capillaries surrounding the stomach constrict, reducing hunger. b. In response to a cold, the pancreas produces less insulin, causing blood sugar levels to spike immediately c. In response to a fever, the liver stops releasing iron into the blood, starving certain bacteria. d. In response to a fever, the small intestine becomes more permeable to large protein molecules.
What is the nutrient cycle in nitrification?
a. Nitrogen, nitrate, nitrite b. Ammonia, nitrite, nitrate c. Ammonia, nitrate, nitrite d. Ammonia, nitrogen, nitrite
Which of the following is NOT a function performed in the nucleus?
A) Storing genes on chromosomes B) Producing regulatory factors C) Packaging proteins and transport them around the cell D) Producing mRNA E) DNA replication
Certain small towns in the western United States have remained isolated and inbred since their settlement many years ago. Some alleles are more common in these communities as compared to the rest of the population. This effect is known as
A. disrupting selection. B. Hardy-Weinberg principle. C. founder effect. D. artificial selection. E. directional selection.