Glycogen is a molecule that contains many glucose molecules. Which best describes glycogen? A. Glycogen is a lipid and helps the body use energy.
B. Glycogen is a polysaccharide and helps the body use energy.
C. Glycogen is an amino acid and is used as a building block for other materials.
D. Glycogen is a nucleic acid and is used as a building block for other materials.

Are substances released into the environment that in excess amounts cause damage

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme