Chemistry Of Food (chemistry) Flashcards
What’s the use of carbohydrates in the body?
Give energy
What is the use of protein in the body?
Help aid growth and repair
What is the use of fat in the body?
Give energy and insulate the body
What is the use of minerals and vitamins in the body?
Protect from diseases
What is the use of fibre in your body?
Help remove waste
Enzymes are proteins that…………………… chemical reactions
Enzymes are proteins that speed up chemical reactions
Name the 4 basic steps of the enzymes in the lock and key modal:
Substrate molecules move towards the active site in the enzyme
Substrate molecule fits into the active site
Reaction occurs and products are made
If the product molecules do not fit in the active site they are released. The enzyme can be used again with new substrate molecules.
At what temperature do the enzymes denature?
Above 40°C
What factors affect enzyme reactions?
- Ph
- temperature
What does it mean if the enzyme is in optimum condition?
Optimum conditions are the conditions when an enzyme is going as rapidly as possible
What happens in extreme temperatures or PH?
At extreme temperatures or pH values the enzyme becomes Denatured. This means the reactant cannot fit into the enzyme and cannot be broken down.
What does iodine test for?
Iodine test for starch. If starch is found the substance turns black.
What does Benedicks test for?
The Benedicks tests for sugars, if sugars are found the substance turns brick red
The beuret test tests for ….
Protein, if protein if found the substance turns purple.
Ethanol tests for…
Lipids, if lipids are present the substance turns white/cloudy
