2. make up - c, h, and o
a. monosaccharides - carbohydrate made up of one type of sugar (ex. glucose)
b. disaccharides - carbohydrates made up of two sugars bonded together
(ex. glucose + glucose = maltose)
c. polysaccharide - complex carbohydrate made up of chains of monosaccharides
ex. starch - food storage compound found in plants
cellulose - makes up the cell wall of plants
glycogen - a food storage compound in animals

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.

yes, because even though a theory has a  lot of evidence to support it, it is not always true

answer; cnidarians;