In a plant cell, where do chemical reactions take place?
Cytoplasm
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What is the definition of an Enzyme?
A protein that speeds up chemical reactions in our cells.
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What two factors denature an enzyme?
pH level and tempurature.
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What is the optimum tempurature for enzymes?
37 degrees celsius.
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What is the model used to describe enzyme reactions?
Lock and Key model.
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What is the Lock and Key model?
The lock and key model shows that enzymes are very specific. Only one substrate can fit one enzyme molecule in order to speed up a specific reaction.
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HIGHER- What is the part of the enzyme where the specific substrate binds and creates a chemical reaction?
Active Site.
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HIGHER- What happens if the shape of a specific Active Site changes?
It will stop the enzyme from working (Enzymes cannot be killed as they are not living)
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HIGHER- What is Active Transport?
It is a process where dissolved molecules move across a cell membrane against the concentration gradient. (lower concentratio nto higher concentration.) This process requires an input of energy from the cell.
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Name an example of where Active Transport occurs?
Digestion of food in the small intestine or when nitrates are take up from the ground in plants.
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In a plant cell, where do chemical reactions take place?
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