998346
Beschreibung
Karteikarten von theragingninja, aktualisiert more than 1 year ago
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Erstellt von theragingninja
vor fast 10 Jahre
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| Frage | Antworten |
| Cells and Microscopy | B2.1 |
| Role of nucleus? | Contains DNA which controls what the cell does |
| Role of cytoplasm? | Gel like substance where most chemical reactions happen |
| Role of cell membrane | Holds the cell together and controls what goes in and out |
| Role of mitochondria? | Where most reactions for respiration happens |
| Role of a cell wall? | Made of cellulose, it gives support for the cell |
| Role of chloroplast? | Contains a green substance called chlorophyll so that photosynthesis occurs |
| What don't bacterial cells have? | Bacterial cells do not have a nucleus |
| Chromosomal DNA | One long circular chromosome. Controls the cell's activities and replication. Floats free in cytoplasm |
| Plasmids | Small loops of extra DNA that are not part of the chromosome. Can contain genes like 'drug resistance' which can be passed between bacteria |
| Flagellum | Long hair like structure that rotates to make the bacteria move |
| Bacteria cells are supported by a... | Cell wall |
| Formula for magnification? | Magnification = Length of image/Length of specimen |
| What does a light microscope allow us to see? | Nucleus, chloroplast and mitochondria in cells |
| What does an electron microscope allow us to see? | To see smaller things in more detail |
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