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Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not. Chloroplasts allow plants to make the food they need to live using photosynthesis.

Outcomes

In this unit you will learn about:

• The concept of elasticity
• Understand the relationship between tension and extension

In this lesson you will learn about:

• The concept of elasticity
• Understand the relationship between tension and extension

Overview of animal and plant cells. Topics include cell walls, vacuoles, chloroplasts, peroxisomes, lysosomes, mitochondria, etc.

This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.