How long does treatment for TB take?
A. one to two days
B. two months
C. one to two weeks
D. six months or more
E. one month
Answer: D
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Which of the following statements best summarizes the Krebs cycle? a. One six-carbon glucose molecule is broken down to two three-carbon pyruvate molecules
b. NAD+ is regenerated in the final steps of this energy-releasing pathway. c. Acetyl-CoA is broken down to CO2, producing ATP and reduced coenzymes. d. Electrons are passed along an electron transfer chain, pumping protons across the inner mitochondrial membrane.
What are the 2 main anatomical adaptations that contributed to the evolutionary success of arthropods?
What will be an ideal response?
Normally, a certain enzyme has maximum activity at 37°C, but once it has been heated to 100°C and then cooled back down to 37°C, the enzyme is no longer active. Why?
What will be an ideal response?
You are doing field study work with a scientist studying spiders in the Amazon rainforest. You come across a previously undiscovered species of spider and set up a video camera with a zoom lens to observe it closely without disturbing it. You see the
female spider lay two eggs, kill an ant that tried to eat one of the eggs, and preserve the ant to feed the hatchlings the next day. She lays two more eggs as soon as the two offspring grow larger and leave. When your mentor asks for a monthly update, what exciting news do you have for her about this species? A) It exhibits unusual zero population growth tendencies. B) It exhibits unusual K-selected tendencies. C) It exhibits unusual intelligent learning tendencies. D) It exhibits unusual r-selected tendencies.