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Organisation (Of Cells) (Components of Blood (Red Blood Cells (Biconcave…
Organisation (Of Cells)
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The Digestive System
Mouth:
- Chew (Physical Digestion) increasing surface area and enzyme action
- Salivary Amylase (Chemical Digestion) breaks down starch
Oesophagus (Peristalsis):
- Pushes food towards Stomach
Stomach:
- Makes Acid
- Pepsin likes Acidity
- Churns food
Pancreas:
Produces
- Carbohydrase
- Protease
- Lipase
Small Intestine:
- Adds more enzymes
- Absorbs nutrients
Large Intestine:
- Absorbs water
- Compacts undigested food
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Lock and Key Theory
First, the Substrate enters the Active Site the Enzyme
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Next, the Enzyme breaks down the Substrate into two products
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Finally, the products leave the active site and the Enzyme is ready to be used again
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Blood vessels
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Capillaries
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Thin walls (one cell thick) is a shorter diffusion pathway for Oxygen, Carbon Dioxide and Glucose
