A: mouth. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine. Large molecules of food are broken down into smaller molecules that can be absorbed by our cells.
Lipids serve as structural components of cell membranes, function as energy storehouses, and function as important signalling molecules. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.
Hope this helped :)
WHATS THATT ???????????????
Answer:
A water molecule (formally known as dihydrogen monoxide) is composed of two hydrogen atoms and one oxygen atom.
Explanation:
The actual reaction to make water is 2H2 + O2 = 2H2O + Energy
