What enzymes are contained in biological washing powders?
What are the advantages of using enzymes?
Why are baby foods treated with proteases?
What is glucose syrup used for?
Most refined sugar we use at home comes from either sugar cane or sugar beet, but sugar syrup is not made from these. What is it made from and which enzyme is required?
Because petrol is made from oil which is becoming scarce, some countries are using thier crops to make starch. What is this starch converted into to replace/assist petrol?
Glucose and fructose have exactly the same chemical formula, but the arrangement of their atoms are slightly different, giving them different shapes (called isomers). One consequence of the different shape of fructose is that it tastes sweeter. Now, as they both obviously contain the same amount of energy/calories, if fructose is used in food, less will be needed to achieve the same level of sweetness. What type of food therefore makes great use of fructose?
What are the disadvantagies of using enzymes?
Easily damaged by extremes of heat or pH. Initial cost is expensive (but because they can be used over and over again, they are cheaper in the long term)
Some people can be sensitive to enzymes
As well as in the mouth, where else is amylase made?
In what three areas are proteases made?
What is the name for the chemicals formed from the breakdown/digestion of fats?
What are the products of fat digestion?
Amino acids
Fatty acids
Peptides
Fatty acids and Glycerol
What affect will fat digestion have on the pH within the gut?
No affect
pH decreases
pH increases
When carbohydrates are digested, sugars are produced. What is glucose typically used for?
What are amino acids used for? Building.....
new proteins
proteins
peptides
Where does the linking of amino acids take place?
Mitochondria
Nucleus
Cell membrane
Ribosomes
What are needed to build cell membranes or hormones?
How does mechanical digestion by the teeth help to speed up enzyme activity?