Name ______Number ______Date ______
BrainPop: “Cell, and Cell Processes”
Cells:
1. What does the cell membrane do?
2. What is the “center” of a cell called?
3. What is the name of the jelly-like substance within a cell called?
4. What scientific tool is required to see most cells?
5. How many cells are there in your body?
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Cell Structures:
1. Mitochondria, lysosomes, and vacuoles are all examples of what?
2. What organelle in a cell manufactures proteins?
3. What organelle breaks down food and releases energy?
4. What do Golgi bodies (apparati) do?
5. What is the purpose of vacuoles and vesicles?
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Passive Transport:
1. Since cell membranes let some material in, and keep other material out of the cell,
they are said to be what?
2. Passive transport allows cells to absorb and expel substances without using what?
3. What physical process does passive transport rely on to work?
4. What are differences in concentration called, and in what “direction” do particles
naturally diffuse? ;
5. What type of equilibrium do cells attempt to maintain?
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Diffusion:
1. In what direction do substances diffuse?
2. When do molecules stop moving down a concentration gradient?
3. What causes diffusion?
4. Why is diffusion so important to biology?
5. ** What is the diffusion of water called?
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Active Transport:
1. What separates (is the difference) active transport form passive transport (two things)?
;
;
2. What is the name of the molecules that help substances across the membrane in active
transport?
3. How do transport proteins move substance across membranes?
4. What is the main source of cellular energy?
5. What process releases substances from a cell?
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Body Chemistry
1. What four elements make up most of your body?
2. List three important things that water is used for in your body.
3. What “-ose” is the main source of fuel for the human body?
4. Give two examples of carbohydrates.
5. Give two examples of lipids.
6. What are nucleic acids responsible for?