Leak channels make a neuronal membrane at steady state approximately ________ permeable to K+ than to Na+
A) half as
B) equally
C) twice as
D) 10 times more
E) 100 times more
Answer: E
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A. calcium B. carbon C. hydrogen D. oxygen E. silicon
Small, fishlike marine chordates, pointed at both ends with no distinguishable head, in which the notochord runs the entire length of the nerve cord, are called
A. arrow worms. B. tunicates. C. acorn worms. D. lancelets. E. lampreys.
At the emergency room, the doctor tell you "Your friend has high levels of troponin in the blood." What is this likely to indicate?
A. A broken bone B. A high level of fitness C. An unhealthy diet D. Muscle damage
Which reaction is NOT an exergonic reaction?
a. protein synthesis b. explosion c. fire d. respiration e. movement