Answer:
<em>The correct option is A) Active transport moves substances against the concentration gradient.</em>
Explanation:
Active transport can be described as the movement of molecules against a concentration gradient i.e from an area of lower concentration to an area of higher concentration.
Facilitated diffusion can be described as the movement of molecules guided by other molecules such as integral proteins. These kinds of movements are a type of passive transport as the molecules move along the concentration gradient from an area of higher concentration to an area of lower concentration.
A cell wall protects the cell. It gives the cell strength and structure. It also filters what goes into and out of the cell
In chemical digestion<span>, large molecules like proteins and starches are broken into simpler units that can be readily absorbed. </span>Digestive system<span>. ... The mouth, stomach, small intestine, and other </span>digestive system organs work<span> together to make digesting food and absorbing nutrients efficient.</span>
