Science-Biology 2b

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What are enzymes?
Enzymes are biological catalysts which allow the chemical reactions in the body to occur
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What is a catalyst?
A catalyst is a substance which INCREASES the speed of a reaction, without being changed or used up in the reaction.
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Why does every enzyme have a unique shape?
so that only a certain substance can enter the active site to react.
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What is respiration?
The process of releasing energy from glucose, which goes on in every cell.
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What is the word equation for AEROBIC respiration?
Glucose + oxygen ---> carbon dioxide + water + ENERGY
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What is the word equation for ANAEROBIC respiration?
Glucose ---> energy + lactic acid
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What is ANAEROBIC respiration?
Anaerobic is the incomplete breakdown of glucose which produces lactic acid which builds up in the muscles
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What does ANAEROBIC respiration lead to?
It will lead to oxygen debt when you stop exercising
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Give some disadvantages of anaerobic respiration?
Does not release nearly as much energy as aerobic respiration, its only useful in emergency situations. It causes muscle fatigue - muscles become tired and do not contract efficiently
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Give one advantage of anaerobic respiration?
it allows you to keep using your muscles for a while longer after the blood cant keep up the demand for oxygen
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Card 2

Front

What is a catalyst?

Back

A catalyst is a substance which INCREASES the speed of a reaction, without being changed or used up in the reaction.

Card 3

Front

Why does every enzyme have a unique shape?

Back

Preview of the front of card 3

Card 4

Front

What is respiration?

Back

Preview of the front of card 4

Card 5

Front

What is the word equation for AEROBIC respiration?

Back

Preview of the front of card 5
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