In the citric acid cycle, some intermediates are used in other metabolic reactions. Which of the following adaptations would need to be made by a cell in response to this?
A. Some oxaloacetate would need to be produced through an alternative pathway to combine with acetyl CoA.
B. Cells would have to use energy sources other than glucose for metabolism.
C. The citric acid cycle would eventually shut down when it ran out of intermediates and the cell would switch to glycolysis.
D. Some citrate would need to be produced through an alternative pathway to combine with acetyl CoA.
Answer: A
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You are trying to determine if honeybees have social immunity to nosema, an economically devastating parasite that attacks adult honeybees. You mark some honeybees with a spot of red dye and expose them to a solution containing a sublethal dose of the parasites. Another set of honeybees is exposed to the same solution without parasites. After this exposure, you mix some of the unmarked bees with
the marked bees (Mixed Group). The rest of the unmarked bees are not mixed with other bees (Unmixed Group). If honeybees can develop social immunity to nosema, what are the expected results of your experiment? A. The marked honeybees will mostly survive, but the unmarked bees of both groups will mostly die. B. The unmarked honeybees in the Mixed Group will have a higher survival rate than those in the Unmixed Group. C. The unmarked honeybees in the Mixed Group will have a lower survival rate than those in the Unmixed Group. D. The unmarked honeybees in the Mixed Group will have a higher survival rate than the marked honeybees. E. There is no way to predict the results based on the information given.
Folic acid is ultimately used in the synthesis of
A. topoisomerases. B. proteins. C. DNA gyrases. D. sulfonamides. E. coenzymes.
With __________, a chemical substance is passed
from organisms at each trophic level to those above and becomes increasingly concentrated in body tissues. Fill in the blank(s) with the appropriate word(s).
Compare and contrast the different types of receptors found in the body
What will be an ideal response?