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Biology- Unit 2 Organisation, Enzymes, Test for substrate in food, Types…
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Enzymes
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- Enzymes are proteins so are made of a chain of amino acids
- these chains fold up into a specific shape
- allows enzymes to carry out functions
Induced Fit Model
- The induced fit model is where the enzyme changes shape slightly to fit the substrate better
- It moulds around the substrate to fit better
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Lock and Key hypothesis
- The lock and key hypothesis is when the substrate is perfectly complementary in the active site, in the enzyme
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Types of Tissues
Mesophyll
- capable of photosynthesis
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Epidermal Tissue
- human skin and the waxy covering of some plants are examples of epidermal tissues
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Epithelial Tissue
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- the outer surface of organs and blood vessels
Muscular Tissue
- can contract to bring about force and motion
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Amylase
Starch
Silvary glands,
small intestines
pancreas
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Organelles- Structure found within a cell which have certain functions, examples: mitochondria, nucleus, chloroplast
Cells- The basic building blocks of all living organisms, examples: root hair cell, muscle cell, palisade cell, nerve cell ect.
Tissue- A group of cells with a similar structure and function, examples; nervous, muscle, epithelial, phloem, xylem ect.
Organ- Aggregations of different tissues working together to perform a specific function, examples: stomach, heart, leaf, brain ect.
Organ system- A group of different organs working together to perform a specific function examples: digestive, circulatory, nervous ect.
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