What multiple intersecting food is in the food web

A food web is a diagram of feeding relationships that includes multiple intersecting food chains. Energy is passed up the food chain from one trophic level to the next but a lot of it is lost along the way. There is less biomass at the top of the food chain than there is at the bottom.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.