Participating in a triathlon causes the blood glucose level to decrease. When this happens, the liver releases glucose into the blood. Which feedback mechanism is used to regulate blood glucose? A. a negative feedback loop because the blood glucose level is returned to the set point, not amplified

B. a positive feedback loop because the blood glucose level is returned to the set point, not amplified

C. a positive feedback loop because the Wood glucose level is amplified, not returned to the set point

D. a negative feedback loop because the blood glucose level is amplified, not returned to the set point

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research.b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research.c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data.d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)