metabolism lesson 3.3: cellular respiration, growth, and

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Metabolism

Lesson 3.3: Cellular Respiration, Growth, and Repair

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Warm-Up

7 MINMetabolism: Lesson 3.3

Activity 1

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Activity 1Metabolism: Lesson 3.3

Investigation Notebook pg 74

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Activity 1Metabolism: Lesson 3.3

In the Sim, we observed that when we eat foods with protein, the protein molecules are broken down into smaller amino acid molecules in the digestive system.

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Activity 1Metabolism: Lesson 3.3

We also observed that the circulatory system delivers amino acid molecules to the cells.

In the cells, they are combined to form newprotein molecules.

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Activity 1Metabolism: Lesson 3.3

The proteins we eat give our cells the parts to make new proteins that meet the specific needs of the cell and the body.

Today, we’ll learn how these new proteins are formed and what our cells and bodies use them for.

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Reading About Cellular Growth and Repair

15 MINMetabolism: Lesson 3.3

Activity 2

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Activity 2Metabolism: Lesson 3.3

Next, you’ll read and annotate an article to learn how the cells in the body use the proteins produced in the cells. As you read, keep these questions in mind to discuss after.

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Activity 2Metabolism: Lesson 3.3

Investigation Notebook pg 75

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Activity 2Metabolism: Lesson 3.3

What surprised you about this article?

How are amino acid molecules used in cellular growth and repair?

How are glucose and oxygen molecules used in cellular growth and repair?

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Activity 2Metabolism: Lesson 3.3

Let’s see what we can learn about cellular growth and repair by observing the MetabolismSimulation.

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Activity 2

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Activity 2Metabolism: Lesson 3.3

Energy from cellular respiration is needed to build protein molecules from amino acids. Without it, the amino acid molecules remain at the top of the cell and do not combine.

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Modeling Cellular Growth and Repair

15 MINMetabolism: Lesson 3.3

Activity 3

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Activity 3Metabolism: Lesson 3.3

You will use the Modeling Tool to show what cellslook like in a healthy body. This includes showing the moleculesnecessary for releasing energy for cellulargrowth and repair.

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Activity 3Metabolism: Lesson 3.3

Investigation Notebook pg 76

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Activity 3Metabolism: Lesson 3.3

What should your cell model look like when cellular respirationand growth and repairare happening?

Let’s share our models as a class.

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Activity 3Metabolism: Lesson 3.3

Investigation Notebook pg 76

Annotate your models to include details and vocabulary about what is happening in the healthy body.

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Activity 3Metabolism: Lesson 3.3

Key Concept

10. Cells can grow and repair themselves by combining amino acid molecules to form larger protein molecules. This growth and repair requires energy release from cellular respiration.

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Writing About Elisa

8 MINMetabolism: Lesson 3.3

Activity 4

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Activity 4Metabolism: Lesson 3.3

Diabetes is a medical condition that results in significantly lower than normal numbers of glucose molecules being delivered to the cells of the body.

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Activity 4Metabolism: Lesson 3.3

We’ve already thought about how having fewer glucose molecules in her cells affected Elisa’s body’s ability to release energy through cellular respiration,making her tired.

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Activity 4Metabolism: Lesson 3.3

Next, you will write a short explanationabout how Elisa's diabetes also affects her body’s ability to grow and repair cells.

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Activity 4Metabolism: Lesson 3.3

Investigation Notebook pg 77

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End of Lesson

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Metabolism: Lesson 3.3