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What is the difference between mitosis and meiosis?
Mitosis is a 4-stage process that produces 2 diploid daughter cells from a somatic parent cell (somatic cell is just another way to say any cell other than reproductive cells such as germ cells which produce...
DF
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Dewi F.
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Biology tutor
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How does a vaccine lead to the production of antibodies against a virus?
The vaccine contains antigens of the virus. When injected, these antigens are recognised by macrophages which engulf the antigen and present the antigens on their surface. Once the antigens are presented, th...
KA
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Keziah A.
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Biology tutor
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Describe the structure and function of a chloroplast
Chloroplasts are organelles found only in plants that allow the plant to release energy from sunlight through photosynthesis. They are green in colour because they contain the pigment chlorophyll.
JB
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Joy B.
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Biology tutor
5746 Views
Explain why an athlete loses water when exercising.
The athlete begins to sweat, as exercising releases energy from the body in the form of heat, so the water evaporating from the surface of the skin results in the body cooling down.
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Joy B.
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Biology tutor
3065 Views
Explain 3 ways in which a leaf is adapted for photosynthesis. [6 marks]
Can efficiently absorb sunlight- upper part of leaf contains tightly packed palisade mesophyll cells; cells have large vacuole which pushes chloroplasts to the edge of leaf and well developed cytoskeleton to...
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