456303
Description
Flashcards by Morgan Morgan, updated more than 1 year ago
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Created by Morgan Morgan
almost 12 years ago
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| Question | Answer |
| Functions of a cell? | Protection and support Movement Communication Growth and repair Metabolism and energy |
| Nerve cells specialise in | communication and integration of information. |
| Muscle cells specialise in | in contraction and movement |
| Blood cells specialise | in transport and defense |
| Lung cells specialise in | the movement of gases |
| Gut cells specialise in | absorption and secretion. |
| Lining cells/epithelial cells | have several functions |
| Structure of cell membrane | Phospholipid bilayer Cholesterol Proteins attached carbohydrates |
| Membrane function | Barrier between inside and outside of the cell Controls the entry of materials (transport) Receives chemical and mechanical signals Transmits signals between intra and extra cellular spaces. |
| What is the cytoplasm? | Contains the cells contents Includes organelles and cytosol Excludes the nucleus |
| What is cytosol? | The medium in which the cell's chemical reactions take place. |
| What are ribosomes? | Site of protein synthesis Contain ribosomal RNA (Ribonucleic acid) Can be attached to endoplasmic reticulum or can be free in cytosol |
| Ribosomes are composed of two sub-units... | one small and one large. |
| Smooth and Rough Endoplasmic reticulum | Syntheisis and intracellular transport Lipid synthesis- completed by both smooth and rough ER. Protein synthesis - rough ER only. Protein modification. Transport around the cell. |
| Golgi complex | Modify and package proteins. E.g. lipoproteins and glycoproteins. Some packaged into vesicles Lysosomes |
| Lysosomes contain | digestive enzymes |
| Small bodies in a cell? | Lysosomes Peroxisomes Proteasomes Granules |
| Peroxisomes function? | Oxidise for detoxification |
| Proteasomes function? | Digest proteins. |
| Granules contain? | Fuel stores, e.g glycogen granules. |
| Mitochondrial function? | Energy (ATP) production. Where oxygen is used up. Where nutrients are burned to generate energy in the form of ATP. |
| Nucleus structure? | Round or oval structure. Surrounded by a nuclear envelope. Openings = nuclear pores. Can include a nucleolus. |
| Nucleus function? | Store genetic material. Contains DNA. Can copy information for transfer. |
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