Could another signal be sent down the length of the neuron cell if the sodium ions and potassium ions were not returned to their original positions?

The answer is NO. When a nerve is depolarized it cannot transmit an impulse. It has to wait for the never cell to repolarize. This occurs when K+ ions and Na+ ions are pumped out of the cell by ATPase until the resting potential is achieved. In most nerve cells, the resting membrane potential is usually -70 mV.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )