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Biology Quick Notes (B1 (Electron and light microscopes (Electron…
Biology Quick Notes
B1
Electron and light microscopes
Electron microscopes use beams of electrons to form highly magnified images of a small area
Light microscopes use visible light, less expensive but lower magnification and resolution
How do bacteria reproduce and what are the required conditions?
They reproduce through binary fission, 2 become 4, 4 become 8 etc... (asexual reproduction)
Warmth, moisture and enough nutrients
B3
Plant pathogens
TMV (Tobacco Mosaic Virus)
Rice blast (Fungus)
Ion deficiencies in plants and what they cause
Nitrate
Making amino acids to make protein
Poor growth, yellow leaves
Magnesium
For making chlorophyll
Yellow leaves
Phosphate
Helps regulate protein-synthesis
Poor root growth and discoloured leaves
Potassium
For proper growth and reproduction
Poor growth of fruit and flowers and discoloured leaves
B4
Fermentation is an anaerobic form of respiration
glucose (sugar) -> ethanol (alcohol) + carbon dioxide