<span>They are proteins that are secreted from fat cells to help regulate energy balance.</span>
Simple diffusion is the concept of a substance moving from an area of high concentration to a lower concentration without energy input. Because the plasma membrane is made of lipids which are non-polar, this membrane readily allows non-polar substances to diffuse through easily. If a substance has a charge like that of an ion, it will be difficult for the ion to cross the plasma membrane through simple diffusion. The answer should be B.
<span>It may be subjected to
the number of dissimilar genes in the punnet square. In the characteristic Aa v
Aa square it is a 1:2:1 ratio, 25% AA, 50% Aa, and 25% aa. These percentages
are autonomous of how many offspring, for instance if you have 3 in a row that
are AA the probabilities that the next one will be AA are identical as in the
original.</span>
The answer to this question is B.
