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ANABOLIC REACTIONS
Are biochemical reactions that synthesise
large molecules from smaller molecules, e.g.
· Proteins from amino acids.
· Steroids from cholesterol.
· Cellulose from beta glucose.…read more

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CATABOLIC REACTIONS
· Are biochemical reactions that hydrolyse
large molecules into smaller molecules.…read more

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RESPIRATORY SUBSTRATES
Are biological molecules that can be broken
down in respiration to release energy. E.g.
· Carbohydrates.
· Proteins.
· Lipids.…read more

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WHY WE NEED ENERGY:
· A Scared Elephant Runs More Actively.
· Energy is needed to drive our biological
processes.
· ATP is a universal energy currency which
provides energy for:
· Active transport- needed for Na+ /K+ pump.
· Secretion of useful molecules by exocytosis.
· Endocytosis of useful molecules.
· Replication of DNA and organelles before a cell
divides.
· Movement-muscle contraction.
· Activation of chemicals e.g. During glycolysis
when glucose is phosphorylated to become more
unstable so it can be broken down to release
energy.…read more

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STRUCTURE OF ATP
Consists of:
· A nitrogenous base, adenine.
· A pentose sugar, ribose.
· 3 phosphate groups.…read more

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