After estrogen binds to receptors, these estrogen receptors gain ________ activity.
A. phospholipase
B. GTP binding
C. phosphatase
D. protein kinase
E. transcription factor
Answer: E
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As an acid mixes in water:
A) the number of hydrogen ions will increase. B) the number of hydroxide ions will increase. C) the pH remains at 7. D) it becomes buffered.
How is diabetes linked with homeostasis?
A. Diabetes results from the body having a positive-feedback response to the level of glucose in the blood. B. Diabetes results from the body not responding with a negative feedback to the level of glucose in the blood. C. Diabetes results from the body responding too strongly to the level of glucose in the blood. D. Diabetes is not linked with homeostasis.
The "background" species extinction rate
A. estimates how many extinctions humans are causing. B. estimates how quickly species disappeared before human intervention. C. measures today's extinction rate of animals. D. measures today's extinction rate of plants. E. All of the answer choices are correct.
Which of the above letters represents the brain or
controlling system of nerve reactions in this organism? a. A b. B c. C d. D e. none of these