

EXPERIMENT QUESTIONS
1. (a) TEST FOR REDUCING SUGAR:
FOOD SOURCE: Glucose (monosaccharide)
CHEMICAL USED: Benedictās solution (blue)
HEAT REQUIRED: Yes (thermostatically controlled water bath)
+ RESULT: Colour change BLUE to BRICK RED
- RESULT: No colour change (stays blue)
CONTROL: Water + Benedictās (non-reducing sugar)
PURPOSE OF CONTROL: Acts as a comparison
1. (b) TEST FOR STARCH:
FOOD SOURCE: Potato/ Bread
CHEMICAL USED: Iodine (red/yellow), using a dropper due to small volume needed
HEAT REQUIRED: No
+ RESULT: Colour change RED/ YELLOW to BLUE/BLACK
- RESULT: No colour change (stays red/yellow)
CONTROL: Water and Iodine
1. (c) TEST FOR... (More)
There are 4 types of teeth.
2007
WHAT IS MEANT BY IMMOBILISATION?
Means fixed in place. Immobilised enzymes are enzymes that are attached,or fixed to each other or to an inert material.
NAME A SUBSTANCE THAT IS USED TO IMMOBILISE ENZYMES?
Sodium Alginate
2 ADVANTAGES OF IMMOBILISING ENZYMES?
ONE APPLICATION OF A NAMED IMMOBILISED ENZYME - REFER TO SUBSTRATE, PRODUCT & ENZYME.
Lactase is an immobilised enzyme in porous beads and used to convert lactose into sweeter tasting... (More)
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