Cortisol promotes “glucose sparing” for which organ?
a. liver
b. brain
c. heart
d. lungs
e. kidney
ANSWER: b
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Diversity often decreases during the later stages of succession
Indicate whether the statement is true or false
Explain how transcriptional control by the NrpR protein of the archaeon Methanococcus maripaludis is similar to transcriptional control in bacteria. It is known that 2-oxoglutarate (2OG) is used by cells as an indicator of nitrogen deficiency
Based on what you know about effector molecules in bacterial operons, how would 2OG behave in M. maripaludis (as an inducer, a corepressor, etc.) and what effect would this molecule have on NrpR binding?
A patient with leukemia has blood cells that are not dividing properly and are out of control. Treatment consists of a bone marrow transplant. How would this help?
What will be an ideal response?
Which mechanism prevents fish sperm from fertilizing frog eggs?
a. energetic barriers
b. biological barriers c. prezygotic barriers d. ecological barriers e. postzygotic barriers