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Digestion Enzymes and Food tests
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What temperature do all human enzymes work most efficiently at?
37 degrees Celsius
What is the part of the enzyme called which does the work of breaking down a substrate?
Active Site
What 2 main factors can cause enzymes to Denature?
Temperature and PH
What theory is accepted for enzymes to break down food molecules?
Lock and Key
Biuret is a food test for protein what colour is it originally and what colour does it go for a positive test
Blue to Purple/lilac
What is the food test for fat?
Ethanol
What is the food test for Carbohydrates?
Iodine
What are the 2 main functions of bile?
To break down fat (before Lipase) and to Neutralise stomach acid
What is the Enzyme responsible for breaking down fat?
Lipase
Glucose is needed for which process? _________
Respiration
Fat is broken down to two useful products for the body
Glycerin and Fatty Acids
Protein is broken down to _______ _______
Amino Acids
What are the 2 processes are involved in absorption of the nutrients into the Bloodstream
Active Transport and Diffusion
What are the finger like cells that help in absorption?
Villi
Where is most of the absorption happening (in which organ)
Small Intestine
Which organ produces some of the Enzymes we use to break down food in the Small intestine?
Pancrease
Which organ stores Bile?
Gall bladder
What is the name of the acid in the stomach
Hydrochloric
Approx what is the PH of the Stomach
Between 1-3
Which 2 ways does the mouth start to break down food
Mechanically by the teeth and the salivia to moisten (amylase)
Which enzyme is responsible for breaking down carbohydrates
Amylase
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