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10561114
Chapter 15 Enzymes
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leaving certificate
cell biology
enzymes
biology
leaving cert.
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Tara H
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Tara H
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Resource summary
Chapter 15 Enzymes
An Enzyme is an organic Catalyst which speeds up or slows down the reaction without itself being used up (becoming part of the reaction.)
Introduction
Metabolism= the sum of all the chemical reactions that take place in an organism.
Catabolic reaction
When a more complex miomolecule is broken down to simpler forms and so releases energy.
respiration and diffusion
anabolic reaction
converts simpler molecules into more complex (energy is consumed)
photosynthesis conversion of amino acids into protein.
sources of energy
solar energy
primary source of energy for life.
producers use it to form the chemical bonds of carbs and other biomolecules. This is carried out through photosynthesis.
Autotrophs: they make their own food
Cellular energy
sources of energy that are capable of being released by reactions within the cell
each organism breaks down biomolecules in the process of respiration
heterotrophs: cannot make their own food
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