Biology T6 Revision GCSE Science Ormerod
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a group of similar cells that work together called? | Tissue
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| Which is bigger: 3 x 10-8 or 3 x 10-16 | 3x10-8
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| Which organ system includes the heart? | Circulatory system
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| What role do the teeth play in digestion? | Mechanically breaks down food
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| Name the tube that carries food from the mouth to the stomach? | Oesophagus
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| What is the name of the enzyme secreted by the salivary gland? | Amylase
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| What do the gastric pits in the stomach secrete? | Hydrochloric acid and pepsin (gastric juice)
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| Name the three macromolecules | Starch (carbohydrates), protein, lipids (fats)
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| Which macromolecule is broken down by protease? | Protein
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| Which macromolecule is broken down by lipase? | Lipids (fats)
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| Which macromolecule is broken down by pepsin? | Protein
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| Which macromolecule is broken down by amylase? | Starch
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| Which of the following is not a macromolecule: starch, sugar, protein, fat? | Sugar
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| Which organ secretes protease, lipase and amylase? | Pancreas
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| Why does the small intestine have villi? | To increase surface area
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| What happens to small molecules in the small intestine? | They are absorbed into the blood
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| Define the term ‘catalyst’ | A substance that increases the rate of a chemical reaction
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| Name the part of an enzyme which is involved in reactions | Active site
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| Define the term ‘substrate’ | The substance that the enzyme is acting on
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| What has to match in order for an enzyme to work? | The shape of the active site and the shape of the substrate
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| What is the name of the theory used to describe how enzymes work? | Lock and key theory
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| What does the term ‘denatured’ mean? | The structure of an enzyme is changed so that it doesn’t work
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| What factors might denature an enzyme? | pH and temperature
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Created by:
lesleycollins
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