Biology

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  • Created by: orla.x
  • Created on: 08-06-17 15:32
What is the digestive system?
The food we eat has to be broken down into other substances that our bodies can use. This is called digestion. Without digestion, we could not absorb food into our bodies and use it.
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What are enzymes?
Our teeth break food down into small pieces when we chew. This is only a start to the process of digestion, as chewed pieces of food are still too large to be absorbed by the body. Food has to be broken down chemically into really small particles bef
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What are the stages of digestion?
Different things happen to food as it passes through the digestive system: food is digested in the mouth, stomach and small intestine digested food is absorbed into the bloodstream in the small intestine excess water is absorbed back into the body in
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What does the liver and pancreas do?
The liver and the pancreas play an important part in digestion. The liver produces bile, which helps the digestion of lipids (fats and oil). The pancreas produces biological catalysts called digestive enzymes which speed up the digestive reactions.
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What is respiration?
Respiration releases energy for cells from glucose. This can be aerobic respiration, which needs oxygen, or anaerobic respiration, which does not. During exercise, the breathing rate and heart rate increase. During hard exercise an oxygen debt may bu
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What is aerobic respiration?
What is aerobic respiration? Respiration is a series of reactions in which energy is released from glucose. Aerobic respiration is the form of respiration which uses oxygen. It can be summarised by this equation: glucose + oxygen → carbon dioxide +
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Wat is anerobic respiration?
Anaerobic respiration Not enough oxygen may reach the muscles during exercise. When this happens, they use anaerobic respiration to obtain energy. Anaerobic respiration involves the incomplete breakdown of glucose. It releases around 5% of the energ
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Card 2

Front

What are enzymes?

Back

Our teeth break food down into small pieces when we chew. This is only a start to the process of digestion, as chewed pieces of food are still too large to be absorbed by the body. Food has to be broken down chemically into really small particles bef

Card 3

Front

What are the stages of digestion?

Back

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Card 4

Front

What does the liver and pancreas do?

Back

Preview of the front of card 4

Card 5

Front

What is respiration?

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