Cells b1 edexcel
- Created by: parkavi_gnanan
- Created on: 29-05-18 11:19
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- Cells
- Cells can be either prokaryotic or eukaryotic
- Prokaryotic cells are smaller and simpler and do not have a nucleus eg.bacteria
- Chromosomal dna- one long circular chromosome which controls the cells activities (not in a nucleus)
- Ribosomes
- Plasmid DNA-small loops of extra DNA that aren't part of the chromosome, contains genes for drug resistance
- Flagellum to make the bacterium move, move bacteria away from harmful toxins
- Eukaryotic cells are complex and include all animal and plant cells and do have a nucleus
- Animal cells have a nucleus-contains genetic material and controls the activities of the cell. They also have a cytoplasm-where most of the chemical reactions occur
- Cell membrane-holds the cell together and controls what goes in and out
- Mitochondria-powerhouse of the cell, where respiration takes place
- Ribosomes-needed for protein synthesis
- Plant cells have all the structures that animal cells have but also extra.
- Cell wall-made of cell ulose, supports and strengthens the cell
- Large vacuole- contains cell sap and supports the cell
- Chloroplast-where photosynthesis occurs and contains a pigment chlorophyll
- Animal cells have a nucleus-contains genetic material and controls the activities of the cell. They also have a cytoplasm-where most of the chemical reactions occur
- Prokaryotic cells are smaller and simpler and do not have a nucleus eg.bacteria
- Cells can be either prokaryotic or eukaryotic
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