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21 Cards in this Set
- Front
- Back
The shrinking of animal cells ( hypertonic) |
crenation |
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The shrinking of the plant cell membrane under hypertonic conditions |
Plasmolysis |
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The bursting of the cell wall under hypotonic conditions |
Cytolysis |
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What transpirts proteins on a molecular level? |
Transport proteins |
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Taking materials in through pockets of cell membrane |
Endocytosis |
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Taking in a large particle |
Phagocytosis |
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Taking in liquids in endocytosis |
Pinocytosis |
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Sending material out of the cell |
Exocytosis |
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What are some examples of how single cells maintain homeostasis? |
grow, respond to the environment, obtain energy, reproduce, transport molecules(O2, H2O, CO2), respond to temp. changes, etc. |
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cells are uniquely suited to preform functions within an organism for the good of all cells |
Cell specialization |
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Factory Cells(specialized cell): what do they do? Give examples of organelles within and body cells? |
-they contain a large amount of protein synthesizing organelles -ER, Golgi apparatus, ribosomes -Pancreas cells, liver cells, stomach lining cells |
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Light sensitive(specialized cell): what does it do? What does rhodopsin do? Give an example of what contains light sensitive cells? |
-lower portion of cells contain a large amount of mitochondria; upper portion of cells contain flattened membranes called disks with a pigment called rhodopsin -rhodopsin absorbs light and signals to cell i.e. eyes |
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Street sweeper(specialized cell); |
releases a mixture of water, carbohydrates, and salts called mucus to trap dirt particles; other cells have cilia to sweep these particles away to keep passageways open |
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Mobile cells(specialized cell): |
pollen grains are suited with tiny wings to carry themselves in the wind for fertalization |
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How do cells communicate? |
through chemical signals passed from cell to cell |
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chemical signals from communication cause the cell to... |
speed up or slow down cell activities |
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Where are cellular junctions? What are two of their functions? |
--between cells -some junctions help cells to be held together -other cellular junctions allow the chemical molecules to pass directly from one cell to the next |
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What do cells use to respond to communication? |
receptors |
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What are receptors? |
molecular structures to which the signaling molecule can bind |
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Where are receptors? |
on cell membrane or in cytoplasm |
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What can receptors do? |
cause changes in cellular activities |