Unit 2 SOL Review Quizizz

This graph shows that

• more enzymes are present at a higher pH

• pepsin is less sensitive to pH than trypsin

• pepsin is less effective at low pH than trypsin

• pH affects the activity rate of enzymes

Which of the following macromolecules are a prominent part of animal tissues that function in insulation, helping animals conserve heat?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is the function of enzymes in biological systems?

• Enzymes bond with substrates to create the new reaction products.

• Enzymes act as products to create new chemical reactions.

• Enzymes act as substrates when the necessary proteins are unavailable.

• Enzymes act as catalysts to drive chemical reactions forward.

According to the graph, addition of the enzyme amylase causes the reaction to

• give off heat

• slow down

• speed up

• take in heat

Peroxidase is an enzyme that breaks down hydrogen peroxide in cells. It accomplishes this because of its structure. What part of the enzyme is involved in catalytic activity?

• Binding pocket

• Active site

• Pleated sheet

• Quaternary structure

Proteins are formed from monomers (subunits) called

• fatty acids

• nucleic acids

• amino acids

• nucleotides

Enzymes only work with specific substrates because each substrate

• actively interferes with other substrates around it

• has a specific activation site for enzyme attachment

• can only use a specific ionic bond with the enzyme

• destroys its specific enzyme

Most cellular activities are processes regulated by the action of

• polysaccharides

• lipids

• carbohydrates

• enzymes

Both lipids and carbohydrates are important in animal cells because both

• contain nitrogen

• provide insulation

• store energy

• form cell walls

In order to maintain homeostasis, it is most important for an animal to be able to

• change its habitat

• increase its prey population

• hide from its predators

• respond to its environment