Seventh graders trace a piece of food through the digestive system. They describe the functions of the mouth, esophagus, stomach, etc.

Students explore a group of fungus-like organisms; the Oomycetes, by baiting them from natural sources (water and soil) and observing them.

Seventh graders become more familiar with how our food is broken down mechanically and chemically. They also trace the food through the alimentary canal.

Students explore different codes and ciphers including Morse Code, Egyptian Hieroglyphs, and the Alphabet. They discuss how and why codes are used. Students create their own code and message to exchange with classmates.

Students identify the different parts of the respiratory system of the human body. They work together to complete an activity and worksheet about the effects of radon on the lungs. They research lung diseases if time permits.

Article examines the external structures of the extracellular matrix and the cell wall and looks at the role they play in different cell types.

A brief article which describes and illustrates the structure and function of cell walls in plant cells.

Describes the composition and functions of cell walls in plants, algae, fungi, and bacteria.

[Free Registration/Login may be required to access all resource tools.] Exercise provides an overview of special structures found in plant cells. It explains the function of the cell wall, explores the role of the central vacuole, and...

This lesson will discuss the structure and function of a cell wall. It is 2 of 4 in the series titled "Cell Wall."

This lesson will discuss the structure and function of a cell wall. It is 4 of 4 in the series titled "Cell Wall."

This lesson will discuss the structure and function of a cell wall. It is 3 of 4 in the series titled "Cell Wall."

[Free Registration/Login may be required to access all resource tools.] Even though plants and animals are both eukaryotes, plant cells differ in some ways from animal cells. Plant cells have a large central vacuole, are surrounded by a...

This lesson explains the difference between Eukaryotic and Prokaryotic cells. It is 3 of 4 in the series titled "Eukaryotic vs. Prokaryotic Cells."

Why can't cells continue to grow larger and larger to become giant cells, like a blob? Why are most cells microscopic in size? Find out answers to these questions through this "hands-on" activity that simulates the changing relationship...

[Free Registration/Login may be required to access all resource tools.] An overview of special structures found in plant cells.

This site lets students practice vocabulary words related to cell organelles. The same vocabulary words are presented in one of four different games for students.

This lesson explains the difference between Eukaryotic and Prokaryotic cells. It is 1 of 4 in the series titled "Eukaryotic vs. Prokaryotic Cells."

In this lesson plan site, each student is assigned a cell part to research, create, and place inside of a clear plastic drop cloth (the cell) the size of one-half of the classroom ceiling.

In this hands on site, you will find several simple, fun, cheap, and educational surface area demonstrations to use when studying cell membranes.

An inquiry type lab activity that simulates cell membrane structure and function. This activity can be used in any Life Science or Biology classroom.

The Casparian strip is found in the endodermis layer of a plant's roots and it assists the plant in absorbing water and nutrients from the soil. The structure of a plant root is described and the process by which the Casparian strip...

Information on the specific mechanisms that amoxicillin uses in fighting bacteria.

Kids learn about plant defenses in the science of biology including cell walls, thorns, bark, chemical defenses, and even plants that fight back.