Term
| What molecules get through the cell membrane easily? What molecules do not get through the cell membrane easily? |
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Definition
hydrophobic get through easily
hydrophilic do nto get through easily |
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Term
| How do polar molecules get through the membrane? |
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Definition
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Term
| What is the term for the ability of the cell membrane to let only certain things in and out? |
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Definition
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Term
| What type of properties do transmembrane properties have to have? |
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Definition
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Term
| What membrane channel function is involved in movement of ions, small ions, and macromolecules? |
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Definition
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Term
| What membrane channel function is involved in the changing of enzymes? |
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Definition
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Term
| What membrane channel function is involved in the communication of cells to the outside world? |
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Definition
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Term
| What membrane channel function is involved in identifying the type of the cell? |
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Definition
| cell surface identity marker |
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Term
| What membrane channel function is involved in the binding of cells to one another? |
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Definition
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Term
| What membrane channel function is involved in attaching to the cytoskeleton? |
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Definition
| attachment to cytoskeleton |
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Term
| There are two types of proteins found in the membrane. What are they? |
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Definition
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Term
| what membrane protein is the identity marker found loosely on the membrane surface? |
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Definition
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Term
| what membrane protein is the lipid bilayer that the transmembrane protein penetrates? |
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Definition
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Term
| What is the fluid mosaic model of the membrane? |
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Definition
| lipid bilayer moves fluid-like |
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Term
| List different components of the fluid mosaic model. |
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Definition
peripheal proteins
glycoproteins
phospholipids
glycolipids
cholesterol
lipoproteins |
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Term
| What cell membrane component plays a key role in cell recognition? |
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Definition
| cell surface identity marker |
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Term
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Definition
phospholipid bilayer is ampipathic
contains hydrophobic and hydrophilic |
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Term
| List two characteristics of active transport. Give examples. |
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Definition
energy required
goes against concentration gradient
Ex:
sodium potassium pump
ion pump
electrogenic pump
protein pump
contransport |
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Term
| List two characteristics of passive transport. Give examples. |
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Definition
no energy required
goes with concentration gradient
Ex:
diffusion osmoses
facilitated diffusion |
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Term
| Compare/contrast diffusion, osmosis, and facilitated diffusion. |
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Definition
Diffusion-2nd law of thermodynamics; governs biological systems; HIGH TO LOW CONCENTRATION
Facilitated Diffusion- diffusion through protein channels, specific molecules across cell membrane; no energy needed
Osmosis-diffusion of water across semipermeable membrane |
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Term
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Definition
| ions through membrane of two different molecules in opposite directions |
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Term
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Definition
| ions through membrane in same direction |
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Term
| What types of transport are antiport and symport? |
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Definition
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Term
| How do large molecules move into and out of cell? Is this active or passive transport? |
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Definition
through vesicles and vacuoles (endcytosis and exocytosis)
this is active transport |
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Term
| Define osmosis. active or passive transport? |
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Definition
high concentration of water to low concentration of water
active |
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Term
| What is the name of the protein channels that move water? |
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Definition
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Term
| What property does a membrane have to have for osmosis to occur? |
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Definition
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Term
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Definition
| equal solute, equal water |
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Term
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Definition
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Term
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Definition
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Term
| What is a contractile vacuole? What type of organism would need this? |
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Definition
pumps water out of cell
plant cell, paramecium |
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Term
| What is plasmolysis? Can plants recover from this? |
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Definition
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