Variety of Living Organisms
- Created by: Lucy S
- Created on: 29-03-13 13:15
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- Variety of Living Organisms
- Plants
- Multicellular organisms.
- Cells contain chloroplasts.
- Cells are able to carry out photosynthesis.
- Cells have cellulose cell walls. (as well as cell membrane.)
- Store carbohydrates as starch or sucrose.
- Eg. maize, peas, fern.
- Animals
- Multicellular organisms.
- Cells do not contain chloroplasts.
- Cells are not able to carry out photosynthesis.
- Cells have no cell walls.
- Have a nervous system.
- Able to move from one place to another.
- Often store carbohydrate as glycogen.
- Eg. humans, insects, worms.
- Fungi
- Feed by excreting digestive enzymes onto food & absorbing the digested products.
- Cells do not contain chloroplasts.
- Cells are not able to carry out photosynthesis.
- Cells are joined together to form threads, called hyphae, which contain many nuclei.
- Cell walls are made from chitin. (a protein).
- Store carbohydrates as glycogen.
- Eg. moulds, yeast.
- Bacteria
- Microscopic single-celled organisms.
- Cells do not contain a proper nucleus. (instead they have a circular chromosome of DNA.)
- Some carry out photosynthesis, but most feed off other living or dead organisms.
- Eg. Lactobacillus, Pneumococcus.
- Protoctists
- Microscopic single-celled organisms.
- Some have features like an animal cell, some like a plant cell.
- Eg. protozoa, algae.
- Viruses
- Small particles, smaller than bacteria.
- Not made from cells.
- Parasitic, and reproduce inside host cells.
- Consist of a protein coat surrounding genetic info either in the form of DNA or RNA.
- Infect every type of living cell.
- Eg. Influenza.
- Plants
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