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Description
Flashcards by Ilyass Jalloh, updated more than 1 year ago
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Created by Ilyass Jalloh
over 9 years ago
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| Question | Answer |
| B2.1 Cells and Cell Structure | AQA Additional Science |
| What is the function of the nucleus in both animal and plant cells ? | contains genetic material & tocontrol activities of the cell |
| Where do chemical processes take place ? | in the cytoplasm chemical processes which are controlled by enzymes |
| What is the function of the cell membrane ? | to control the movement of substances into and out of the cell |
| What is the function of mitochondria in animal & plant cells ? | to release energy in respiration |
| Where does protein synthesis happen in both animal & plant cells ? | in the ribosomes |
| What do both plant and algal cells have ? | a cell wall made of cellulose which strengthens the cells |
| What do plant cells have ? | chloroplast -to absorb light energy 4 photosynthesis also contains chlorophyll a permanent vacuole with a cell sap to keep the cell turgid |
| What does a bacterial cell consist of ? | a cytoplasm & a membrane surrounded by a cell wall the genes are in the cytoplasm not in the nucleus |
| What are the features of yeast ? | single celled have a nucleus & a membrane surrounded by a cell wall |
| What is the function & adaptation of cells ? | F : absorb light energy 4 photosynthesis A: full of chloroplast , Regular shaped cells are closely packed in a continuous layer for efficient absorption of sunlight |
| What is the function of root hair cell ? | to absorb water & mineral ions from the soil |
| How is the Root cell adapted ? | Long 'finger-like' process with very thin wall, which gives a large surface area. |
| What is the function of a sperm cell ? | to fertilise an egg cell |
| How is a sperm cell adapted ? | head contains genetic info enzyme 2 penetrate the egg cell membrane middle full of mitochondria 4 energy tail moves sperm to egg |
| What is the function of Red Blood Cell ? | contains haemoglobin to carry oxygen to the cells |
| How is a Red Blood Cell Adapted ? | thin outer membrane allows oxygen to diffuse easily shape increases SA so oxygen is absorbed efficiently no nucleus so full cell is haemoglobin |
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