General Biology Review Material

What are enzymes primarily made of that allow them to act as biological catalysts?

• Carbohydrates

• Proteins

• Lipids

• Nucleic acids

Which part of an enzyme is responsible for binding to the substrate?

• Binding site

• Catalytic site

• Active site

• All of the above

What do you call the molecule upon which an enzyme acts?

• Reactant

• Catalyst

• Product

• Substrate

Why are enzymes considered catalysts?

• They lower activation energy

• They are consumed in reactions

• They increase activation energy

• They stop chemical reactions

Which suffix is commonly found in enzyme names?

• –ose

• –ase

• –ine

• –ite

How are enzymes different from other catalysts?

• Enzymes are inorganic

• Enzymes are biological proteins

• Enzymes slow down reactions

• Enzymes do not function in cells

What happens to enzyme activity when temperature is too high?

• It increases forever

• It remains constant

• It denatures

• It doubles

Which enzyme helps digest starch in saliva?

• Lactase

• Trypsin

• Pepsin

• Amylase

What does the “lock-and-key” model of enzyme action explain?

• Energy use

• Enzyme specificity

• Enzyme reconfiguration

• ATP production

How does the “induced-fit” model differ from the lock-and-key model?

• The active site changes shape

• Substrates are identical

• Enzymes are changed

• Energy is not released