The Cell Membrane: Gatekeeper of the Cell
Explore the structure and function of the cell membrane with this comprehensive Grade 7 science worksheet.
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The Cell Membrane: Gatekeeper of the Cell
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the cell membrane as needed.
The Cell Membrane
1. What is the primary function of the cell membrane?
To produce energy for the cell
To control what enters and leaves the cell
To store genetic material
To provide rigid support to the cell
2. The cell membrane is primarily made up of what two types of molecules?
Carbohydrates and nucleic acids
Lipids and proteins
Water and salts
Vitamins and minerals
3. The term means that the cell membrane allows some substances to pass through while blocking others.
4. The two layers of lipids in the cell membrane are called the .
5. Only animal cells have a cell membrane.
True
False
6. Proteins embedded in the cell membrane can help transport materials.
True
False
7. Briefly explain why the cell membrane is often described as a 'fluid mosaic model'.
8. Describe one way that the cell membrane helps a cell maintain homeostasis.
Use the words below to complete the sentences.
9. The main structural component of the cell membrane is the .
10. The cell membrane is , meaning it controls which substances can pass through.