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cells set 1
cells
| Question | Answer |
|---|---|
| What does the cell membrane do? | Controls transport of substances into the cell |
| Where is energy released? | Mitochondria |
| Where are proteins made? | Ribosomes |
| Where does photosynthesis occur? | chloroplast |
| differences between prokaryotic cell and eukaryotic cells (4) | prokaryotic cell has a single loop of DNA prokaryotic cell has plasmids prokaryotic cell has no mitochondria prokaryotic cell has no nucleus |
| prokaryotic cell and eukaryotic cells both have .... ? (4) | cytoplasm (cell) membrane DNA / genetic material ribosomes |
| what is mitosis? | cell division that enables cells to grow and develop, repair or replace damaged cells |
| what is the first stage of a cell cycle? | DNA / chromosomes replicate / duplicate |
| What is the second stage of a cell cycle? | one set of chromosomes is moved to each end of the cell |
| What is the third stage of a cell cycle? | the cytoplasm and cell membrane divide to form two cells |
| what does a red blood cell do? | carry oxygen |
| what does a nerve cell do? | carry electrical impulse |
| what does an egg cell do? | gets fertilised by sperm |
| what does a sperm cell do? | fertilises an egg cell |
| what does a muscle cell do? | causes movement as it contracts and relaxes |
| how has a red blood cell adapted? | no nucleus and contains haimoglobin |
| how has a nerve cell adapted? | it's very long |
| how has an egg cell adapted? | it has a large cytoplasm to carry lots of nutrients |
| how has a sperm cell adapted? | has a tail to swim, has lots of mitochondria to release energy |
| what does a root hair cell do? | absorbs water and minerals from the soil |
| how has root hair cell adapted? | long and thin to maximise surface area |
| what does a palisade cell in leaves do? | absorbs light and photosynthesises to produce glucose |
| how has a palisade cell adapted? | lots of chloroplasts near the top to absorb as much light as possible |
| what do xylem cells do? | carry water up a plant from the roots to the leaves |
| how has a xylem cell adapted? | hollow to make as much room as possible |
| what do phloem cells do? | carry dissolved sugars from where they are made |
| how has a phloem cell adapted? | has sieve tubes with no nuclei and companion cells with mitochondria to release energy |
| what is differentiation? | the process by which a cell changes to become specialised for its job |
| what is specialised? | a cell that performs a specific function |
Created by:
Cabezablanca
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