Living Factories

By Mr G Davidson


1. Yeast is a type of plant called a fungus.

    True

    False

2. If yeast is allowed to ferment sugar, what is produced?

    yoghurt

    bread

    alcohol

    lactic acid

3. The process by which barley seeds are allowed to start germinating in order to convert starch to malotose is called .

4. The sugar found in milk is called

    glucose

    maltose

    lactose

    sucrose

5. Whey is the solid formed when milk coagulates.

    True

    False

6. What do we call the process where milk is heated to 73oC for 15 seconds to kill harmful micro-organisms?

    

7. The enzyme which separates milk into curds and whey is called .

8. Bicarbonate indicator is used to test for the presence of carbon dioxide. What is the colour change?

    clear to milky

    yellow to red

    brown to blue/black

    red to yellow

9. Alcohol is separated from water by a process called distillation.

    True

    False

10. What prevents the growth of some micro-organisms?