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B2 (1) (Photosynthesis (Chlorophyll and light absorbtion (Chloroplasts ogf…
B2 (1)
Photosynthesis
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Products
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Mineral salts
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Glucose made from carbon, hydrogen and oxygen atoms
Animal and Plant cells
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Plant cell
Same as Animal cells
Cell Membrane, Ribosomes, Cytoplasm, Mitochondrion
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Animal cells
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Nucleus(Contains chromosomes made of genes, Controls activities of the cell)
Microbial Cells
Viruses
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Normally made of a sphere of protein, with some DNA inside it
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Algae
Simple, plant-like organisms
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Tissues
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Structure and Function
Glandular tissue is made up of cells which secrete (release) useful substances such as enzymes or hormones
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Glandular cells
Contains many small vesicles of useful substances that the cell has made, such as enzymes and hormones
Diffusion
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The spreading of the particles of a gas, or of any substance in a solution, resulting in a net movement from a region where they are of a higher concentration, into region where they are in a lower concentration
Specialised cells
Examples
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Red blood cells, Ciliated
Specialised plant cells
Root-hair cells have a large surface area which enables plants to maximise their absorption of water from the soil
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Limiting factors
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Greenhouse
Growing crops in a greenhouse gives the grower a lot more control over the conditions which the plant live
You may be able to produce crops faster as you can control the temperature, but the fuel cost might outweigh the increase in crops
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