In terms of transcription regulation, the role of a helix-turn-helix is most similar to that of a(n) .
A. zinc finger
B. poly-A tail
C. guanine cap
D. sigma factor
Answer: A
You might also like to view...
How does the action of exocytosis by dendritic cells and macrophages differ from that of neutrophils?
A. Dendritic cells and macrophages primarily release microbial fragments, whereas neutrophils primarily act as antigen-presenting cells. B. Dendritic cells and macrophages primarily release products of autophagy, whereas neutrophils primarily release products of any cellular origin. C. Dendritic cells and macrophages primarily release products of any cellular origin, whereas neutrophils primarily release products of autophagy. D. Dendritic cells and macrophages primarily act as antigen-presenting cells, whereas neutrophils primarily release microbial fragments.
In the final trimester of pregnancy, your test results came back positive for an infection that would likely be damaging for the newborn, so your doctor wants to prescribe an antibiotic. What organism is the likely culprit here?
A. Leptospira B. Trichomonas C. Group B Streptococcus D. Herpes simplex 2
All of the characteristics are seen only in mammals except:a
hair. b. mammary glands. c. three middle ear bones. d. incisors, canines, premolars, and molars. e. diapsid skull.
Which event is likely to add the most carbon dioxide to the atmosphere?
a) development of a hurricane in the Gulf of Mexico b) leakage from a nuclear reactor in Japan c) clear-cutting of trees in the Brazilian rain forest d) eruption of a volcano in Iceland