Chemical Reactions and Enzymes-PPt MLVN

Presentation

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Science

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12th Grade

•

Practice Problem

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Hard

Amy Dodson

FREE Resource

14 Slides • 13 Questions

Multiple Choice

Why are chemical reactions and enzymes important for living organisms?

They help organisms obtain energy and build new molecules.

They only occur in non-living things.

They are not necessary for life processes.

They slow down all biological processes.

Multiple Choice

What are the elements or compounds that enter into a chemical reaction called?

Reactants

Products

Catalysts

Enzymes

Open Ended

Explain how mass and energy are conserved during chemical transformations, using an example from living organisms.

Type response here

Multiple Choice

Which of the following statements is true about chemical reactions that absorb energy?

They will not occur without a source of energy.

They often occur on their own.

They always release energy.

They require no activation energy.

Fill in the Blanks

The energy needed to get a chemical reaction started is called

Type answer...

energy.

Open Ended

Describe the role of enzymes in speeding up chemical reactions and give an example of when enzymes are necessary in living organisms.

Type response here

Multiple Select

Which of the following can affect the activity of enzymes?

Temperature

Regulatory molecules

Light

Open Ended

Summarize what you learned about chemical reactions and enzymes in this lesson. How do you think this knowledge could be applied in real-life situations or future studies?

Type response here

Open Ended

What happens to chemical bonds during chemical reactions?

Type response here

Multiple Choice

What is the main function of enzymes in chemical reactions?

To lower the activation energy of reactions

To increase the temperature of reactions

To provide energy for reactions

To change the products of reactions

Open Ended

Based on the graph shown, explain how the presence of an enzyme affects the activation energy required for a chemical reaction.

Type response here

Fill in the Blanks

Enzymes are very

Type answer...

, generally catalyzing only one type of chemical reaction.

Multiple Choice

Which of the following factors can affect the activity of enzymes?

Temperature

Regulatory molecules

All of the above

Show answer

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