1
2
3
4
5
6
8
9
10
11
12
13
14
15
7
16
Calderglen High School
1
What factors can change the efficiency
of enzymes?
answer
Change in pH or
temperature
Calderglen High School
2
Give examples of alcoholic drinks and the
number of units they have.
answer
Small glass of wine – 1 unit
Spirit measure
- 1 unit
Pint of beer or lager – 2 units
Calderglen High School
3
The alcohol produced during fermentation is
……….?
answer
Ethanol
Calderglen High School
4
The water and alcohol mixture formed in the
fermentation reaction be separated by ……?
answer
Distillation
The process can also be used
to increase the concentration
of fermentation products
Calderglen High School
5
How are alcoholic drinks made?
answer
Alcoholic drinks are made by
fermenting any fruit or vegetable
which is a source of sugars. An
enzyme produced by yeast acts as
a catalyst for the reaction
Calderglen High School
6
Fermentation is……..?
answer
The breakdown of
carbohydrates to form
alcohol
Calderglen High School
7
Give examples of alcoholic drinks and the source
of carbohydrate from which they are made.
answer
Wine = grapes
Cider = apples
Whisky = barley
Vodka = potatoes
Calderglen High School
8
Give some products (apart from food)
which can be made from plants?
answer
Medicines
Alcohol
Calderglen High School
9
Name a plant used to make ethanol for fuels?
answer
SUGARCANE
Calderglen High School
10
Name a product you could get from
poppies?
answer
Morphine
(medicine)
Calderglen High School
11
Which of carbohydrate is found
pasta and bread?
answer
Starch
Calderglen High School
12
Describe the effect of changes in pH and
temperature on the efficiency of an enzyme?
answer
An enzyme works best at a certain
pH and temperature (their
OPTIMUM pH and temperature).
Above and below the optimum
their efficiency is reduced.
Calderglen High School
13
ENZYMES are ……?
answer
Biological
catalysts
Calderglen High School
14
The molecular formula for
GLUCOSE is…………..?
answer
C6H12O6
Calderglen High School
15
Which plant can ASPIRIN be
derived from?
answer
Willow
Calderglen High School
16
Why can alcohol above a certain concentration not
be made by fermentation?
answer
At high concentrations, the enzymes in
the yeast stop working
Calderglen High School