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Basic cell structure
302.3 Vet nursing Basic cell structure, physiology and division
| Question | Answer |
|---|---|
| Membrane that separates the cell from its environment | Cell membrane (plasma membrane) |
| Embedded on the surface of the cell membrane and help cells recognize other cells | Carbohydrates |
| Layer of fat molecules which makes up the cell membrane | Phospholipid bilayer |
| Fluid that fills the inside of the cell. | Cytoplasm |
| Round or oval structure in the cell which contains genetic material | Nucleus |
| Area of the nucleus where ribosomes are manufactured | Nucleoli (one nucleolus) |
| Powerhouse of the cell | Mitochondria |
| Site of protein synthesis in the cell. | Ribosome |
| Network of membrane lined tubes and cavities in the cytoplasm. Covered in ribosomes and transports proteins. | Rough endoplasmic reticulum |
| Network of membrane lined tubes and cavities in the cytoplasm. No ribosomes and transports lipids and steroids. | Smooth endoplasmic reticulum |
| Stack of flattened sacs in the cytoplasm. Modifies proteins by adding carbs. Forms lysosomes. | Golgi apparatus |
| Small round membrane bound sacs containing digestive enzymes. | Lysosomes |
| Area of the cell involved in pulling the chromosomes apart during cell division | Centrosome |
| Extensions of the plasma membrane that can create a wave like motion. Usually found in large numbers. | Cilia |
| Extension of the plasma membrane that can move the cell using an undulating motion. Usually found singularly. | Flagella |
| 7 organelles of the cell | Mitochondria, Ribosomes, Rough endoplasmic reticulum, Smooth endoplasmic reticulum, Golgi apparatus, Lysosomes, Centrosome (NOT NUCLEUS) |
| Cell division seen in autosomal cells | Mitosis |
| Cell division seen in sex cells | Meiosis |
| 4 stages of mitosis | Prophase -> Metaphase -> Anaphase -> Telophase |
| What is interphase? | Resting phase in between divisions. Normal cell activity. |
| What is crossing-over in cell division? | Occurs during prophase 1 of meiosis. Chromasomes become entangled and can swap pieces of DNA |