Answer:
The answer is A.
Explanation:
The permeability of the pacemaker cell's membrane is the factor that controls the density of the materials inside the cell which also includes sodium and that controls the neurons and muscles. So if we were able to artificially alter the pacemaker cell's membrane parmeability, for the heart it would result in a quicker satisfaction of the threshold value and therefore would increase the heart rate.
I hope this answer helps.
Answer:
true
Explanation:
a virus needs a host to replicate its like fleas they lay eggs on dogs to replicate
Answer:
It tells us the polarity of the water.
He never liked being on the hot seat and he'd found his niche<span> with this job.</span><span>
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Answer:
B., D., A., A., C., D., D., A., D., C.
Explanation:
