Enzyme Unit Test Practice

The inhibitor that attaches to another place on the enzyme other than the active site, causing a change in the enzyme's shape and inhibiting production?

• noncompetitive inhibitor

• competitive inhibitor

• sucrase inhibitor

Which of the following denatures an enzyme? (Circle all that apply)

• pH

• Temperature

• Substrate Concentration

Which if the following describes the function of a peptide bond?

• holds nucleotides together

• holds amino acids together

• holds monosaccharides together

Some people cannot digest milk products because they lack a specific enzyme. Which enzyme would be used to break down the lactose in milk?

• hydroxylase

• maltase

• lactase

Most human enzymes work best at around what temperature?

• 150 F

• 98 F

• 32 F

Enzymes are mostly composed of what organic molecule?

• carbohydrate

• protein

• lipid

A substrate is...

• The reactant that an enzyme acts on when it denatures a chemical reaction

• The reactant that an enzyme acts on when it catalyzes a chemical reaction

• The reactant that an enzyme acts on when it slows a chemical reaction

Which of the following enzymes would digest a fat?

• fatase

• protease

• lipase

What affect does extremely high temperatures have on enzymes?

• has no effect on the enzyme

• allows enzyme to work faster

• denatures the enzyme

What does the term optimum mean for enzyme temperature?

• The lowest temperature at which the enzyme works

• The temperature which gives the highest enzyme activity

• The highest temperature before denaturing occurs