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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.

In this online course, you will learn how to identify equivalent metric units of mass.

Three activities which illustrate the law of exponents.

This is a simple video which describes how indices problems are solved using simplified laws.

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

Online problems where the student is required to simplify the expression using the product property of exponents.

An activity explaining the properties of exponents.