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16 Cards in this Set
- Front
- Back
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What is a cell membrane? |
A cell membrane is a thin covering that forms the outer boundary of a cell. |
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What is selectively permeable? |
Selectively permeable means that certain molecules go through them and other molecules do not. |
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What is passive transport? |
Passive transport is the movement of substances through the membrane without the use of the cells own energy. |
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What is diffusion? |
Diffusion is the movement of molecules from a place where there are many of them to a place where there are few them. |
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What is osmosis? |
Osmosis is the diffusion of water through a selectively permeable membrane. |
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What is active transport? |
Active transports uses the cells own energy. |
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What did Leeuwehoek called the organisms he viewed with his microscopes? |
Bestest or animalcules. |
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The basic parts of a cell? |
The cellular boundaries the cytoplasm and the genetic material. |
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What are cell walls? |
The cell wall supports and protects the cell |
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Organelles? |
Organelles are the parts of a cell that perform any of the functions needed to keep the cell alive. |
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What are vacuoles? |
Vacuoles are organelles that look like bubbles and serve as a containers inside the cytoplasm of some cells. |
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What are the difference between cilia and flagella? |
Cilia if they are short and there are many of them on the cell and flagella if they are longer and the cell has only a few. |
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What is the nucleus? |
The nucleus is a compact roundish structure that function as the control center for the cell. |
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What are chromosomes? |
Chromosomes are composed of DNA and other molecules. |
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Which organelles are filled with enzymes that help destroy and this old unneeded cell structures as well as invading foreign matter? |
Lysosomes. |
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What is the difference between a prokaryotic and then eukaryotic cell? |
Prokaryotic does not have a nuclear membrane and only non membrane-bound organelles. |
