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Cell Membrane
Unit 4: Transport
| Question | Answer |
|---|---|
| What are the 3 other names for the cell membrane? | 1. plasma membrane 2. fluid mosaic model 3. phospholipid bilayer |
| What is the only job the the cell membrane? | Maintain homeostasis by controlling what an enter and leave the cell. |
| What are the three components of the cell membrane? | 1. phospholipids 2. proteins 3. cholestrol |
| What portion of the phospholipid bilayer is hydrophobic? | The non-polar tails |
| What portion of the phospholipid bilayer is hydrophilic? | The polar heads |
| What does hydrophobic mean? | Non-polar or afraid of water |
| What does hydrophilic mean? | Polar or water-loving |
| The head of a phospholipid is composed of ____________. | Polar phosphate |
| The tails of a phospholipid is composed of _____________. | Non-polar fatty acids |
| The function of the cholesterol in the cell membrane is to _________________. | Maintain the fluidity of the cell membrane |
| If a substance does not like water it is said to be __________. | Hydrophobic |
| Maintaining ______________ is the only job of the fluid mosaic model. | Homeostasis |
| If a substance does like water it is said to be ____________. | Hydrophilic |
| True or False: The structure and properties of the cell membrane allow it to be selective and maintain homeostasis. | True |
| True or False: The plasma membrane is a bilayer of lipid molecules with protein molecules embedded in it. | True |
| True or False: The fluid mosaic model describes the plasma membrane as a structure that is liquid and very rigid. | False |
| True or False: The phospholipid bilayer is semi-permeable. | True |
| True of False: The interior portion of the fluid mosaic model forms a polar zone. | False |
| This protein helps to move substances across the cell membrane. | Transport Protein |
| This protein serves as I.D. to let other cells know what it is. | Identification Proteins |
| This protein allows cells to talk to one another. | Receptor proteins |
| What are the three jobs of membrane proteins? | 1. Transport 2. Communication 3. Identification |
| A cell membrane is said to be ____________________ permeable because it allows the passage of some solutes and not others. | Selectively |
| ____________________ molecules have “heads” and “tails” and are found in the cell membrane. | Phospholipid |
| The outermost boundary of an animal cell is the | Cell membrane |
Created by:
Biomonsters
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