Answer: Cell A does more work than cell B.
Mitochondria is the energy producer organelle of the cell. It produces energy in the form of ATP molecules. It is a membrane bound organelle which is only present in eukaryotic cells not found in prokaryotic cells. Presence of more number of mitochondria in the cell indicates that the energy requirement of the cell is more. This energy is required for cellular metabolism. Therefore, cell with more mitochondria works more than the one with less mitochondria.
<span>Endocytosis moves materials into a cell via </span><span>membranous vesicles</span>
Nancy the neuron has just fired an action potential. Now she cannot fire another action potential until she resets her electrical potential. She is in a refractory period. The refractory period starts after the hyper-polarization of the neuron. In this phase the neurons is inhibited of generating further action potentials, and the recovery to resting potential of the neuron membrane begins with the potassium ions slowly leaking into the cell.