The ________ is a factor-independent termination site found in the leader region of certain operons, which, under the influence of ribosome behavior, controls the continued transcription of that operon.
A. modulator
B. terminator
C. operator
D. attenuator
Answer: D
You might also like to view...
Four of these five choices are reasons to be concerned about increasing levels of UV radiation reaching Earth. Select the exception
a. mutations b. skin cancers c. slowing rate of photosynthesis d. decline in atmospheric oxygen e. global warming
As you are analyzing the blood sample of a human patient, you note an abnormally high number of erythrocytes. Predict the effects of this situation.
A. The ease of flow for the blood could decrease. B. Immune function would improve. C. More nutrients would reach cells. D. Less oxygen would reach the tissues.
Epidemiologists at the CDC in Atlanta, GA, have called you in to investigate an increased incidence of leukemia in a remote region of Africa. Shortly after you arrive, an RNA virus was isolated from patients and found to induce leukemia in mice
At this point, you don't know the viral gene product or the mechanism that causes development of leukemia. One of your lab assistants has isolated a variant of the virus that is missing 20% of the genome of the original virus and does not induce leukemia in mice. a) How would you determine which portion of the genome is associated with the development of leukemia? b) How would you determine the viral product or mechanism associated with the development of leukemia? What will be an ideal response?
What is gross primary production?
A. Photosynthetic production plus energy recycled by detritivores B. The carbon fixed during photosynthesis C. The carbon fixed after accounting for cellular respiration D. Energy released by primary consumers