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20 Cards in this Set
- Front
- Back
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What are the basic characteristics of a living organism? |
Movement - |
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Name the 5 characteristics of a plant? |
Multi-cellular Cell wall is made of glucose, Vacuole containing sap, Chloroplasts for photosynthesis, Carbohydrates stored as starch or sucrose |
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Name the 5 characteristics of an animal? |
Multi-cellular, Eat other living organisms, No cell wall or chloroplasts, Can move freely, Store carbohydrates as glycogen |
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What are the levels of organisations within organisms? |
Orgenalles, cells, tissues, organs and systems |
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What is an organelle? |
Organised or specialised structures within a living cell |
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What are tissues? |
A collection of specialised cells of a similar origin that work together to perform a function. |
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What are the 5 characteristics of a fungi? |
Some are single celled, Body organised into mycelium (lots of thread like hyphae containing many nuclei), cell wall is chitin and fibrous carbohydrates, use saprotrophic nutrition, store carbohydrates as glycogen |
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What is saprotrophic nutrition? |
Extra cellular secretion of digestive enzymes onto food material and absorption of organic products |
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What is the function of a nucleus? |
Controls cell / contains DNA |
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What is the function of cytoplasm? |
Jelly like substance where all reactions take place |
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What is the function of a cell membrane? |
Partially permeable / maintains cell shape |
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What is the function of a cell wall? |
Made of cellulose / rigid, keeps the cell shape |
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What is the function of chloroplast? |
Contains chlorophyll / where photosynthesis occurs |
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What is the function of a vacuole? |
Stores cell sap, water and minerals |
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What are 3 the characteristics of a protoctist? |
Microscopic, single celled. Some (amoeba) have animal like cell features. Some (chlorella) have chloroplasts like plants. Some are pathogens eg. Plasmodium causes malaria |
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What is a pathogen? |
An agent causing disease or illness to its host |
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What are the 8 characteristics of bacteria? |
Microscopic, Single celled, Cell wall/membrane, Cytoplasm, No nucleus, Circular chromosome of DNA, Some photosynthesize, Use binary fission to reproduce |
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What is binary fission? |
DNA is doubled in cell, cell splits in two, form of sexual reproduction |
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What are the 6 characteristics of virus? |
Smaller than bacteria, Parasitic, Reproduce inside living cells, No cellular structure, Protein coat surrounding DNA, Can infect every type of living organism |
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What can pathogens be? |
Fungi, bacteria, protoctist, or viruses |
