Biology
Cells, genes, energy and how living things work.
- Mitosis vs meiosisMitosis makes two identical body cells; meiosis makes four different sex cells.
- Photosynthesis vs cellular respirationPhotosynthesis stores energy in glucose; respiration releases it.
- Cell organelles and their jobsEach organelle has one main job — match the part to the function.
- Diffusion and osmosisParticles move from high to low concentration; osmosis is water doing this across a membrane.
- Using Punnett squaresCross each parent's alleles to find the chance of each offspring genotype.
- Dominant and recessive allelesA dominant allele shows with one copy; a recessive needs two.
- DNA base pairing and replicationA pairs with T and C pairs with G; each new strand copies one old one.
- How temperature affects enzymesActivity rises to an optimum, then falls fast as the enzyme denatures.
- Natural selectionIndividuals with helpful variations survive and pass them on.
- Energy flow in food chainsOnly about 10% of energy passes to each next level.
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