Enzymes Warmup

To which group of organic molecules do enzymes belong?

• carbohydrates

• nucleic acids

• proteins

• lipids

Which of the following is NOT true of enzymes?

• Enzymes catalyze chemical reactions

• Enzymes can be denatured

• Enzymes are substrate-specific

• Enzymes increase the activation energy needed to do the reaction

What happens to enzymes during the denaturation process?

• They combine with another enzyme

• Their active sites are changed

• They have been converted to tripeptides

• Their water content has been reduced

Enzymes are used up in chemical reactions.

• True

• False

Which of the following statements about enzymes is true?

• An inhibitor will speed up a chemical reaction involving an enzyme

• Enzymes work best in extremely high temperatures

• Enzymes can speed up or slow down reactions in a cell as needed.

• Enzymes can be denatured by changes in temperature.

What is represented by letter C in the diagram?

• substrate

• enzyme

• products

• active site

What is represented by letter D in the diagram?

• active site

• enzyme

• products

• substrate

What is represented by letter A in the diagram?

• active site

• enzyme

• products

• substrate

What is represented by letter B in the diagram?

• active site

• enzyme

• products

• substrate

The denaturing of an enzyme is typically a reversible process.

• True

• False