It is true <span>that a change in membrane permeability or ion concentration will change the resting membrane potential. A resting neuron has a voltage across its membrane called the resting membrane potential. The resting potential is determined by the concentration gradient of ions across the membrane and by membrane permeability to each type of ion. In aresting neuron, there are concentrations gradients across the membrane for Na+ and K+. Ions move down their gradients via channels, leading to a separation of charge that ceates the resting potential.</span>
The answer is B: the instructions for making some proteins are not specified by genes.
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The prokaryotic cell does not have a nucleus but instead they have a chromosome.<span />
I believe that the probability of having an individual with attached earlobes will be 50%. Since the attached earlobes is recessive then its genotype will be (ee), for the unattached ear lobes the genotype will be EE, Ee. Therefore, mating between an individual with attached ear lobes (ee) and one with unattached ear lobes, heterozygous, Ee, the offspring will be; Ee, Ee, ee, or ee. Therefore; half of the offspring will have unattached ear lones (heterozygous) while another half will have attached ear lobes.