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Definition
Can be on either side of the membrane. They are there to support the cell. Majority are on the Cytoplasmic side.
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| A mechanism for velcroing one organism to another. |
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Definition
| individual molecules remain in close association yet have the ability to readily move within the membrane |
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Definition
nmost lipids can rotate freely around their long axes and move laterally within the membrane leaflet |
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Definition
| Movement of lipids from one leaflet to the opposite leaflet requires ATP and Flippase. |
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Definition
The image on the Left is an Example of Lateral Movement of lipids.
The image on the Right is an Example of a "Flipflop" movement of lipids. |
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| The length of Fatty Acyl tails should not be longer than ____ carbons. |
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Definition
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| Who conducted an experiment that verified the lateral movement of membrane proteins? |
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Definition
| Larry Frye and Michael Edidin |
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| A mechanism for freezing and separating two surfaces so that you can see either side. |
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| Same concentration of a substance both in the solution and in the cell. |
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Definition
| The solution has a higher concentration of a substance than the cell. |
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Definition
| The cell has a higher concentration of a substance than the solution. |
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Definition
| The diffusion of water. (Passive) |
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Definition
| Shrinking in a hypertonic solution. |
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| Transport proteins must move down a _________ ___________ |
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Definition
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| Transport Proteins enable what? |
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Definition
| Biological membranes to be selectively permeable. |
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| Transport Proteins are divided into what two classes? |
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Definition
| Channels and Transporters |
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Definition
| Most are gated, they forrm an open passageway for the direct diffusion of ions or molecules across the membrane. This requires a trigger to open or close. They are specific based on size, not binding. |
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Definition
| Principal pathway for the uptake of organic molecules, such as sugars, amino acids, and nucleotides. |
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Definition
| Can only move one item at a time. |
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Definition
| Can move two items at one time. |
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Definition
| Can send one molecule outside and one inside all at once. |
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Definition
| Movement of a solute across a membrane against its gradient from a region of low concentration to higher concentration. |
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| Active transport requires what in order to work? |
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Definition
| Energy in the form of ATP and some kind of integral protein. |
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Definition
| The mechanism for releasing large amounts of molecules from a cell at one time. (Bulk Transport, Specific) |
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Definition
| The mechanism for allowing large numbers of molecules into the cell at one time. This is specific. |
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