C3

HideShow resource information
An example of a carbohydrate polymer is:
cellulose.
1 of 49
Which elements are present in carbohydrates?
carbon, oxygen, hydrogen
2 of 49
Elements such as carbon and nitrogen are cycled in the natural world. Where do animals get these elements from?
plants
3 of 49
Which organisms return elements in dead animals and plants back into the soil and air?
Decomposers
4 of 49
Which of these increases the nitrogen compounds in soil?
lightning
5 of 49
Which organisms break down nitrogen compounds in soil?
Denitrifying bacteria
6 of 49
Which is the most important chemical element that plants obtain from the soil?
Nitrogen
7 of 49
In intensive farming, what is used to put back this element?
synthetic fertiliser
8 of 49
In organic farming, what is used to put back this element?
manure
9 of 49
Organic farmers may also grow leguminous plants as a crop every few years. What is the name of this technique to put an essential nutrient back into the soil?
crop rotation
10 of 49
Scientific reseach and applications are controlled by:
laws and regulations
11 of 49
People on low incomes may benefit from intensive farming because it produced food that is:
cheap
12 of 49
Some people believe that intensive farming is bad because it uses:
pesticides
13 of 49
Some people buy organically grown food because they think it is:
healthy
14 of 49
People on low incomes may not buy organically grown food because it is:
expensive
15 of 49
Intensive farming may be less sustainable than organic farming because it uses:
synthetic fertiliser
16 of 49
Many people are against the use of genetically modified crops because they think that they may:
damage the environment.
17 of 49
Preservatives are added to food to:
prolong shelf life
18 of 49
Anti-oxidants are added to food to:
prevent "off" flavours.
19 of 49
Emulsifiers and stabilisers are added to food to:
stop ingredients separating
20 of 49
An additive that has passed an EU safety test is given an:
E number.
21 of 49
Some food additives may cause:
hyperactivity in children.
22 of 49
Some plants naturally produce poisonous chemicals called:
toxins
23 of 49
Some people get ill if they eat peanuts or gluten in wheat. This is because they have an:
allergy.
24 of 49
What organism may produce poisonous chemicals as it grows on stored food?
mould
25 of 49
What chemicals used by farmers may contaminate food made from their crops?
Pesticides
26 of 49
The chemical residues allowed in foods are controlled by:
EU laws
27 of 49
What is the Food Standards Agency?
an independent food safety watchdog
28 of 49
How was the Food Standards Agency set up?
The Food Standards Agency was set up by an Act of Parliament.
29 of 49
By law the information on food labels must be:
true
30 of 49
What do food labels tell people?
what is in the food
31 of 49
What information can tell us about the size of a risk?
data
32 of 49
What is the benefit of using aspartame instead of sugar?
less likely to cause obesity
33 of 49
What is the risk of using aspartame instead of sugar?
may cause cancer
34 of 49
Many people consider aspartame safe to use because it has been:
officially approved
35 of 49
What phrase sums up the preacutionaly principle?
better safe than sorry
36 of 49
Digestion breaks down natural polymers into compound that are:
more soluble
37 of 49
During digestion starch is broken down into:
glucose
38 of 49
During digestion protein is broken down into:
amino acids.
39 of 49
Excess amino acids are broken down in the liver to form:
urea
40 of 49
The breakdown produce of excess amino acids is excreted by the:
kidneys
41 of 49
Some processed foods may cause a rapid rise in blood sugar level because they contain high levels of:
sugar.
42 of 49
In Type 1 diabetes the pancreas stops making:
insulin
43 of 49
Type 2 diabetes usaully develops:
later in life
44 of 49
Type 1 diabetes can be controlled by:
insulin injections
45 of 49
Type 2 diabetes can be controlled by:
diet and exercise.
46 of 49
Why may some people eat unhealthily despite the risks of eating this way?
because they enjoy fast food.
47 of 49
If everyone ate healthily fewer people would get diabetes. Why would this benefit society?
it would reduce medical costs.
48 of 49
What information is required for a person to make a choice of whether to accept the risk associated with a particular activity?
both chance and consequences
49 of 49

Other cards in this set

Card 2

Front

Which elements are present in carbohydrates?

Back

carbon, oxygen, hydrogen

Card 3

Front

Elements such as carbon and nitrogen are cycled in the natural world. Where do animals get these elements from?

Back

Preview of the front of card 3

Card 4

Front

Which organisms return elements in dead animals and plants back into the soil and air?

Back

Preview of the front of card 4

Card 5

Front

Which of these increases the nitrogen compounds in soil?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Polymers resources »