Fat stored in the body is used as a source of energy when not enough energy is available from food. this process involves: a. using fatty acids that are available in the cell's lipid layer. b. transporting cholesterol to the muscles to be broken down for energy. c. converting glucose into fat as a more efficient method of producing energy. d. dismantling stored fat in fat cells and releasing components into blood. e. retrieving fatty acids that have been stored in the liver.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Which of these transport mechanisms moves glucose from the blood into a cell? active transport diffusion facilitated diffusion osmosis