Human Physiology 2

Question 1

Which nutrient type stores the most energy per unit?

Answer 1

Lipids

Question 2

Which category of nutrients contain nitrogen?

Answer 2

Proteins

Question 3

When a polypeptide is digested, the chemical reactions involved would be classified as

Answer 3

Hydrolysis

Question 4

What term best describes the monomer form of a lipid?

Answer 4

Fatty acid

Question 5

What term best describes the monomer form of a protein?

Answer 5

Amino acid

Question 6

What is the name of the process that links monomers together to form polymers?

Answer 6

Dehydration synthesis

Question 7

What term is used to describe a carbohydrate that is made up of three or more subunits?

Answer 7

Polysaccharide

Question 8

How does an enzyme digest?

Answer 8

Hydrolysis

Question 9

How does an enzyme build chemicals?

Answer 9

Dehydration/Condensation reaction

Question 10

What are 2 types of reactions by an enzyme?

Answer 10

hydrolysis and dehydration synth (condensation)

Question 11

What are factors affecting enzyme action?

Answer 11

pH (enzymes function best within certain pH ranges), substrate concentration (more molecules = more collisions = more reactions, only so many reactions can occur), temperature (increased temp causes molecules to move faster and increase # collisions, too high = burn), competitive inhibition (compete for access to active site, substrate cannot bind if inhibitor remains joined), feedback inhibition (product of metabolic pathway accumulates within a cell and interferes with an enzyme, product binds to enzymes regulatory site, altering shape, allosteric activity, change in an enzyme cause by binding of a molecule)