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Biology B2.2
Karten in diesem Stapel (18)
- 1During photosynthesis light energy is transferred into ....Chemical Energy
- 2Carbon Dioxide + Water =Glucose + Oxygen
- 3Chlorophyll in chlorplasts absorb ....Light energy
- 4What is the process of photosynthesis?Carbon Dioxide is taken in by the leaves and water is taken up by the leaves.
the chlorophyll in the chloroplast traps the light energy.
This energy is then used to convert carbon dioxide and water into glucose. - 5What can be used to test leaves for starch?Iodine
- 6What are limiting factors of plants photosynthesising?Lack of light: light provides the energy so the rate of photosynthesis would decrease.
Cold: enzymes don't work efficiently s it slows down the rate.
Too little carbon dioxide: this can occur in an enclosed space. - 7Plant and Algal cells produce glucose during....Photosynthesis
- 8How do plants use glucose?Converted into soluble starch for storage.
Used for respiration.
Converted into fats and oils for storage.
Used to produce cellulose which strengthens cell walls.
Used to produce proteins. - 9Plants and algal cells need.... such as .... to produce protein.Mineral ions such as nitrate ions
- 10What are three substances used for storage in plants.Insoluble starch
Fats
Oils - 11The distribution of organisms is effected by...Environmental factors.
- 12What are the physical factors that may affect the distribution of organisms?Temperature.
Availability of nutrients.
Amount of light.
Availability of water.
Availability of oxygen and carbon dioxide. - 13Why are there so few animals living in very cold conditions such as the Arctic?The plants there are very small so there is very little for animals to eat.
- 14What two ways can quantitative data be obtained?Random sampling using a quadrat.
Sampling along a transect. - 15What is a quadrat?A square frame which may be subdivided. They are used by randomly placing them in the chosen area and counting the the amount of organisms in each one.
- 16What is a transect?A transect is not random. A line is marked between two points and then quadrats are placed along it. Physical factors can as be measured at each quadrat point.
- 17What is the result of the iodine test for starch?The regions with starch will turn blue/black and the regions without starch will turn brown/yellow.
- 18What is meant by reproducible results?When the investigation can be repeated by a different person or with different equipment and have similar results
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- This is taken from an AQA revision guide and is made to help me revise efficiently.
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- Jade Allatt
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