Enzymes Lesson

Multiple Choice

Identify the enzyme in the diagram.

• A

• B

• C

• D

Multiple Choice

What are the three main characteristics of enzymes as described in the image?

• Speed up chemical reactions

• Highly specific to reactions

• Sensitive to certain conditions

• All of the above

Open Ended

How does the “lock and key” model explain enzyme specificity?

Multiple Choice

What role do enzymes play in chemical reactions?

• They slow down reactions

• They act as biological catalysts

• They are not necessary for life

• They only work in high temperatures

Open Ended

Compare the activation energy of the reaction with and without the enzyme.

Multiple Choice

What is the role of enzymes in cellular processes regarding specificity?

• They can act on multiple substrates

• They are not specific to any reaction

• They are specific to one type of reaction or molecule

• They can function without substrates

Multiple Choice

What are the two types of metabolic reactions illustrated in the image?

• Anabolic reaction

• Catabolic reaction

• Both A and B

• None of the above

Multiple Choice

What happens to enzyme activity when the temperature is too low, optimal, or too high?

• Reactions speed up

• Enzyme becomes denatured

• Enzyme works best at 0°C

• Reactions slow down

Multiple Choice

The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

• A substrate will be able to bond with the enzyme.

• The enzyme will likely be attacked by immune cells

• The enzyme will be unable to produce more enzymes.

• A substrate will be unable to attach to the enzyme.

Open Ended

Compare the activation energy required by the two reactions shown in the energy diagrams.