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29 Cards in this Set
- Front
- Back
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What is the role of ribosomes? |
It is where proteins are synthesised |
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What is the role of the cell membrane? |
It controls the movement of materials in and out of the cell |
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What is the role of the mitochondria? |
Where energy is released during aerobic respiration |
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What is the role of the nucleus? |
It controls the cells activities |
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What is the role of the cytoplasm? |
It is where the chemical reactions take place |
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What is the role of the cellulose cell wall? |
To support it |
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What is the role of chloroplasts? |
It contains chlorophyll for photosynthesis
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What is the role of the permanent vacuole? |
It contains cell sap |
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What structures do animal and plant cells have in common? |
They both have ribosomes, cell membrane, cytoplasm, nucleus and mitochondria. |
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What is different from a plant and animal cell? |
An animal cell doesn't contain a cell wall, permanent vacuole and chloroplasts. |
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What is osmosis |
The movement of water |
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What is the equation for photosynthesis? |
Carbon dioxide + water (+light energy) = glucose + oxygen |
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Explain what a red blood cell does |
It has no nucleus and contains haemoglobin which carries oxygen around the body. It transports co2 and also has a biconcave which increases surface area. |
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Explain how photosynthesis works |
Photosynthesis happens in the chloroplasts of a plant cell. Water gets into the plant by the root system. Carbon dioxide gets into the plant through the stomata. |
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Where is the stomata in a plant? |
Under the side of the leaf |
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What is the pigment called in chloroplasts? |
Chlorophyll and it's what makes the plant green |
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What does the xylem in a plant do? |
It is involved in the movement of water through a plant from its roots to its leaves |
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What does the phloem in a plant do? |
It is the movement of food substances from the stems to growing tissues and storage tissues. |
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What is a limiting factor |
A factor that limits a process. E.g limiting the amount of light that a plant receive will affect it's growth. |
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Name 5 limiting factors |
Sun, water, nutrients, minerals, space, co2, o2 pests/disease. |
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What temperature do enzymes get denatured at? |
Around 40.c |
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What can glucose be used for in plants? |
Used for amino acids which are then used for respiration, or to build up fats and oils to make them stronger. |
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What does niche mean? |
The set of conditions that an organism's suited to |
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What is the difference between a biotic factor and a non-biotic factor. |
Biotic = living Non biotic = non living |
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What is the different between anaerobic and aerobic respiration? |
Aerobic = with air anaerobic = without air |
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What is the equation for aerobic respiration |
glucose + oxygen = carbon dioxide + water (+ energy) |
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What is the equation for anaerobic respiration? |
glucose = lactic acid (+energy) No oxygen is needed, it happens when there is no more oxygen left for aerobic respiration to be performed. |
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Define extintion |
A species which once existed no longer does and has died out. |
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Where is the genetic material stored in a bacteria? |
It's stored in the cytoplasm because bacteria do not have a nucleus. |
