8205053
Description
Flashcards by gracie massamba, updated more than 1 year ago
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Created by gracie massamba
almost 8 years ago
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| Question | Answer |
| Plasma Membrane | Composed of a phospholipid bilayer, with proteins embedded in the layer. Function: the membrane is selectively permeable and regulates the transport of materials into and out of the cell. Separates cell contents from the outside environment |
| Cytoplasm | Cytoplasm is a thick, gelatinous, semi-transparent fluid. Function: the cytoplasm maintains cell shape and stores chemicals needed by the cell for metabolic reactions. |
| Nucleus | The nucleus is the largest organelle and is surrounded by a nuclear envelope. The envelope has nuclear pores which allow the movement of molecules through it. The nucleus contains chromatin. Function: the nucleus controls/regulates cellular activity and houses genetic material called chromatin, DNA and proteins, from which comes the instruction for making proteins. |
| Nucleolus | Dense spherical structure in the middle of the nucleus. Function: the nucleolus makes RNA and ribosomes. |
| Rough Endoplasmic Reticulum (RER) | Network of membrane bound flattened sacs called cisternae studded with ribosomes. Function: protein synthesis takes place on the ribosomes and the newly synthesized proteins are transported to the Golgi apparatus. |
| Smooth Endoplasmic Reticulum (SER) | Network of membrane bound flattened sacs called cisternae. No ribosomes. Function: Responsible for synthesis and transport of lipids and carbohydrates. |
| Golgi Apparatus | A stack of membrane bound flattened sacs. Function: Newly made proteins are received here from the rough ER. the Golgi apparatus modifies them and then packages the proteins into vesicles to be transported where they are needed. |
| Vesicles | Small spherical membrane bound sacs with fluid inside. Function: Transport vesicles are used to transport materials inside the cell and secretory vesicles transport proteins that are to be released from the cell, to the cell surface membrane. |
| Lysosomes | Small spherical membrane bound sacs containing hydroly |
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