Question

name zymiyh suber date sep 20,2025 period 4th
macromolecules test biology unit 1
multiple choice section

1. you are walking down the \tough streets of new jersey, and suddenly you feel the need to run away from someone who is accosting you! your muscles keep a form of energy stored just for these emergencies. what macromolecule stores energy in the muscles?

a. glucose
b. galactose
c. starch
d. glycogen
e. chitin

1. a polysaccharide is formed when many monosaccharides are joined together by a. dehydration synthesis reaction

b. a hydrolytic reaction
c. a hydrolysis reaction
d. a and b
e. b and c

1. the main source of energy for cells is

a. sucrose
b. glucose
c. fructose
d. galactose
e. maltose

1. potatoes have a large amount of

a. protein
b. lipids
c. nucleic acids
d. wax
e. carbohydrates

Explanation:

1. Glycogen is the macromolecule that stores energy in muscles. Glucose is a monosaccharide and a main - energy source but not the stored form in muscles. Galactose is a monosaccharide. Starch is the energy - storage molecule in plants. Chitin is a structural polysaccharide.
2. Polysaccharides are formed by dehydration synthesis reactions where monosaccharides are joined together with the removal of water. Hydrolytic and hydrolysis reactions break down polysaccharides.
3. Glucose is the main source of energy for cells. Sucrose, fructose, galactose, and maltose are also sugars but not the primary energy source for cells.
4. Potatoes are rich in carbohydrates, specifically starch which is a polysaccharide. They are not primarily sources of protein, lipids, nucleic acids, or wax.

Answer:

1. d. Glycogen
2. a. a dehydration synthesis reaction
3. b. Glucose
4. e. Carbohydrates