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22 Cards in this Set
- Front
- Back
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What are enzymes |
Biological catalysts |
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Why are enzymes so specific in their reaction |
Only molecules with exactly the right shape will bind to the enzymes and react |
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What is the part of the enzyme to which the substrate (reactant) binds called? |
The active site |
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What happens at the enzymes reactant site |
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What factors affect the rate of a reaction |
-PH -substrate concentration -surface area -temperature -pressure -enzymes concentration |
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What does aerobic mean |
With oxygen |
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What is breathing |
The gas exchange in the lungs |
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What is respiration |
The energy production in the mitochondria |
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What is respiration |
The energy production in the mitochondria |
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Where an glycogen stores be found |
Liver and muscle cells |
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What is an enzyme made up of |
A long chain of amino acids |
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What is the difference between respiration and photosynthesis in plants |
Photosynthesis locks up energy from sunlight inside glucose molecules, respiration releases this energy for use |
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Where does photosynthesis happen |
In the chloroplasts |
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What happens to an enzyme when the temperature increases |
At first the enzyme activity increases as the molecules more faster thier is more chance they will collide and react but once the temperature passes the optimum the activity decreases and stops as the enzyme denatures |
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What breaks down starch into sugars and where is it found |
Amylase found in the salivary glands and the pancreas |
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What breaks down proteins into amino acids and where is it found |
Protease found in the pancreas, stomach and small intestine |
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What breaks down lipids (fats) into glycerol and fatty acids and where is it found |
Lipase found in the pancreas and small intestine |
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Why are enzymes found in some washing powders |
Because the enzymes can help to break down tough stains so they can be washed away |
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Why are enzymes found in some baby food |
Because a baby's digestive system is not fully developed so the baby foo contains protease to break down the large protein molecules so they baby can absorb the amino acids |
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Why are enzymes found in slimming foods |
Because they contain a very sweet sugar called fructose that is made from glucose using the enzyme isomerase |
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What is the word equation for aerobic respiration |
Glucose + oxygen -> carbon dioxide + water + energy |
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Where does aerobic respiration take place |
In the mitochondria of cells |
