The cellular process in which materials are moved across a membrane from an area of low concentration to an area of high concentration is called
a. osmosis.
b. simple diffusion.
c. active transport. eliminate
d. passive transport.

The right answer is c. active transport.

In biology, active transport refers to the passage of an ion or a molecule across a membrane against its concentration gradient. If the process uses chemical energy produced, for example, by the hydrolysis of a nucleotide triphosphate such as adenosine triphosphate, it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient. Active transport is opposed to passive transport, which does not use energy.

Specialized transmembrane proteins recognize the molecules / ions and allow them to (or in the case of secondary transport, expend energy to force them to) cross the membrane, whereas without these proteins this would be impossible, either because of the presence of the lipid bilayer impervious to them, either because it is a movement against a concentration gradient. In the latter case, known as primary active transport, the protein acts as a pump that uses chemical energy, usually ATP. In other cases, the energy comes from the use of an electrochemical gradient or transport is provided for example by symports or antiports.

When particles are to be transferred from a low-concentration compartment to a concentrated compartment (ie against the concentration gradient), an active transporter becomes necessary to effect the transfer. Transport molecules are specific to the molecules they carry (for example for glucose).

well i’m not to well in health but if the body produces more standard fat then the fat will convert most of it into energy and give all the muscles nutrients (sorry if it was wrong  

nope, but i have cleaned my brush in my cup of not as potentially harmful but nevertheless, very upsetting for scottish/british folks. especially if you've used the last teabag for it

explanation:

there could be something in that . . i am indeed an old scottish man!

there's a bit of bolshie-ness with it too though. i won't let go of the old ways . . tea and whisky . . whether the young whippersnappers like it or not!