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12 Cards in this Set
- Front
- Back
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The Cell
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The smallest functional and structural unit of an organism and the basic unit of all living organisms. |
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That are the 3 essential parts of a cell?
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2. the bounding membrane 3. the nucleus |
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What is cytoplasm and what does it contain?
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The protoplasm of the body of the cell that surrounds the nucleus. It contains cytosol, organelles, inclusions, and most of the cell's ribonucleic acid. |
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What is protoplasm?
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The primary component cells. |
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What is the cell membrane?
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The external boundary of a cell that separates it from extracellular fluid and other cells.
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What is the nucleus?
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The largest organelle inside the cell, which directs the cells activity. It also plays a vital role in cell growth, reproduction and metabolism. |
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How do cells interact with other bodily fluids?
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Through the interchange of substances. |
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What are the methods by which substances can travel across the cell membrane?
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diffusion, osmosis, active transport, endocytosis, and filtration
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Diffusion
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The movement of lipid soluble substances from an area of higher concentration to an area of lower concentration until equilibrium is reached.
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Facilitated Diffusion
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The movement of non lipid soluble substances move through protein channels in the cell membrane.
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Channel Proteins and Carrier Proteins
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They carry non-lipid soluble substances across the plasma membrane by facilitated diffusion. |
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Osmosis
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The passive transport or movement of water across the semipermeable cell membrane. Moves from lower concentration to higher concentration. |
