Organelle Functions
Organelle functions
- Created by: Harriet Goodship
- Created on: 07-01-13 14:11
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- Organelles
- Nucleus
- Houses cells genetic material
- The chromatin consists of DNA and proteins
- Some of these proteins regulate the cells activities
- When cells divide, chromatin condenses into visible chromosomes
- Has instructions for making proteins
- Nucleolus makes RNA and ribosomes
- These pass into the cytoplasm and proteins are assembled at them
- Endoplasmic Reticulum
- Rough ER
- Transports proteins that were made on attached ribosomes
- Some of these proteins may be secreted from the cell
- Transports proteins that were made on attached ribosomes
- Smooth ER
- Involved in making lipids that the cells need
- Rough ER
- Golgi Apparatus
- Modifies proteins received from ER
- Packages these proteins into vesicles that can be transported
- Some of these proteins may go to cell surface membrane so they can be secreted
- Modifies proteins received from ER
- Mitochondria
- Produce ATP during respiration which releases energy which almost all cells need
- Chloroplasts
- Site of photosynthesis in cells
- Light energy is used to drive the reactions of photosynthesis in which carbohydrate molecules are made from CO2 and H2O
- Site of photosynthesis in cells
- Lysosomes
- Contain digestive enzymes
- Break down material, e.g. white blood cell - break down invading organisms and head of sperm cell - break down material surrounding egg to help penetration
- Contain digestive enzymes
- Ribosomes
- Site of protein synthesis
- Centrioles
- Take part in cell division
- Form fibres known as the spindle which move chromosomes during nuclear division
- Take part in cell division
- Nucleus
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