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WJEC DA Biology Unit 1

Total questions: 133

Worksheet time: 1hrs 10mins

Name
Class
Date
1.
What name is given to species that make their own food?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
2.

Which one of these are primary consumers?

a)

Producers

b)

Herbivores

c)

Carnivores

d)

Omnivores

3.
Which one of these are primary and secondary consumers?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
4.
Which word describes how energy is lost from a food chain in undigested material?
a)
Respiration
b)
Feeding
c)
Excretion 
d)
Egestion
5.
Which word describes how energy is lost from a food chain as heat?
a)
Respiration
b)
Feeding
c)
Excretion 
d)
Egestion
6.
Which word describes how energy is passed along a food chain?
a)
Respiration
b)
Feeding
c)
Excretion 
d)
Egestion
7.
How much energy is lost on average by each stage in a food chain?
a)
0.9%
b)
90%
c)
9%
8.
What lives in or on a host and causes it harm?
a)
Predator
b)
Prey
c)
Consumer
d)
Parasite
9.
What word describes the growth of the human population?
a)
Exponential
b)
Potential
c)
Experiential
d)
Polar
10.
What describes your total emissions of greenhouse gases?
a)
Carbon footprint
b)
Greenhouse footprint
c)
Global warming
d)
Nitrogen footprint
11.
What type of pollution is caused by CFCs in refrigerators and aerosols?
a)
Global warming
b)
Acid rain
c)
Ozone depletion
d)
Eutrophication
12.
What type of pollution is caused by sulphur dioxide and nitrous oxides released when fossil fuels are burnt?
a)
Global warming
b)
Acid rain
c)
Ozone depletion
d)
Eutrophication
13.
What type of pollution is caused by carbon dioxide levels increasing?
a)
Global warming
b)
Acid rain
c)
Ozone depletion
d)
Eutrophication
14.
What type of pollution is caused by sewage or fertilisers getting into rivers and streams?
a)
Global warming
b)
Acid rain
c)
Ozone depletion
d)
Eutrophication
15.
Indicator organisms can be used to check how polluted rivers, streams and lakes are.  Which gas in the water are the indicator organisms sensitive to?
a)
Oxygen
b)
Nitrogen
c)
Carbon dioxide
d)
Sulphur dioxide
16.

What word describes all the living things and their surroundings in an area?

a)

Ecosystem

b)

Habitat

c)

Biodiversity

d)

Population

17.

What word describes the place where a plant or an animal lives?

a)

Ecosystem

b)

Habitat

c)

Biodiversity

d)

Population

18.

What word describes how many individuals there are of one species in an area?

a)

Ecosystem

b)

Habitat

c)

Biodiversity

d)

Population

19.
What is an advantage of storing glucose as starch in plant cells?
a)
It is soluble
b)
It is insoluble
20.
What can glucose be converted into to make plant cell walls?
a)
Starch
b)
Protein
c)
Fat
d)
Cellulose
21.
Which part of plants often contains fat as a rich energy store?
a)
Seeds
b)
Roots
c)
Flowers
d)
Stems
22.
What is the limiting factor in region A of the graph?
a)
Light intensity
b)
Carbon dioxide concentration
c)
Temperature
d)
Oxygen concentration
23.
What colour light does chlorophyll reflect?
a)
Orange
b)
Red
c)
Blue
d)
Green
24.
Which of these will speed up diffusion?
a)
High concentration gradient
b)
Low concentration gradient
25.
Which of these will speed up diffusion?
a)
High surface area
b)
Low surface area
26.
Which of these will speed up diffusion?
a)
Short diffusion distance
b)
Long diffusion distance
27.
What will happen to an animal cell in a dilute solution?
a)
Cell lysis
b)
Cell crenation
c)
Turgidity
d)
Plasmolysis
28.
What will happen to a plant cell in a concentrated solution?
a)
Cell lysis
b)
Cell crenation
c)
Turgidity
d)
Plasmolysis
29.
What will happen to a plant cell in a dilute solution?
a)
Cell lysis
b)
Cell crenation
c)
Turgidity
d)
Plasmolysis
30.
Which of the factors below will decrease the rate of decay?
a)
Lowering the temperature
b)
Increasing the temperature
31.
Which of the factors below will decrease the rate of decay?
a)
Reducing the amount of oxygen available
b)
Increasing the amount of oxygen available
32.
Which of the factors below will decrease the rate of decay?
a)
Reducing the surface area
b)
Increasing the surface area
33.
Which method of farming uses artificial fertilisers and pesticides to maximise yields?
a)
Intensive farming
b)
Organic farming
34.
Which method of farming uses biological control and manure to maximise yields?
a)
Intensive farming
b)
Organic farming
35.
Why do animals further up food chains get killed by pesticides?
a)
Pesticides are persistent, they increase in concentration as they move up food chains
b)
Pesticides are persistent, they decrease in concentration as they move up food chains
c)
Pesticides are short lived, they increase in concentration as they move up food chains
d)
Pesticides are short lived, they decrease in concentration as they move up food chains
36.
What are the parts of cells called?  For example the nucleus, mitochondria and ribosomes.
a)
Organs
b)
Tissues
c)
Organelles
d)
Organisms
37.
Which of these cell types would contain the most mitochondria?
a)
Muscle cells
b)
Skin cells
c)
Red blood cells
d)
Bone cells
38.

Which of these biological molecules is made from amino acids?

a)

Starches

b)

Fats

c)

Proteins

d)

DNA

39.
Which of these is the correct balanced symbol equation for aerobic respiration?
a)
C6H12O6 + 6O2  ---〉6CO2 + 6H2O
b)
6CO2 + 6H2O  ---〉C6H12O6 + 6O2
c)
C6H12O6 + O2  ---〉CO2 + H2O
d)
C6H12O6 + 3O2  ---〉3CO2 + 3H2O
40.
Where in the body is carbon dioxide excreted?
a)
Liver
b)
Lungs
c)
Blood
d)
Pancreas
41.
Which blood vessels take blood from the heart?
a)
Arteries
b)
Veins
c)
Capillaries
42.
Which blood component transports oxygen?
a)
Red blood cells
b)
White blood cells
c)
Platelets
d)
Plasma
43.
Which blood component initiates the clotting response?
a)
Red blood cells
b)
White blood cells
c)
Platelets
d)
Plasma
44.
Which blood component produces antibodies?
a)
Red blood cells
b)
White blood cells
c)
Platelets
d)
Plasma
45.
Which blood component transports food, carbon dioxide, hormones and urea?
a)
Red blood cells
b)
White blood cells
c)
Platelets
d)
Plasma
46.
Which letter is the left ventricle?
a)
A
b)
B
c)
C
d)
D
47.
Which letter can generate the greatest pressure?
a)
A
b)
B
c)
C
d)
D
48.
Which number is the tricuspid valve?
a)
1
b)
2
c)
3
49.
Which number prevents blood flowing from the left ventricle to the left atrium?
a)
1
b)
2
c)
3
50.
Which letter receives deoxygenated blood from the body?
a)
A
b)
B
c)
C
d)
D
51.

What is the organelle where photosynthesis takes place?

a)

Nucleus

b)

Cytoplasm

c)

Chloroplast

d)

Mitochondria

52.

Which of these can be a limiting factor in photosynthesis?

a)

Light intensity

b)

Oxygen concentration

c)

Glucose concentration

d)

Nitrate concentration

53.

Leaves that have areas without chlorophyll are called.....

a)

Variegated

b)

Pied

c)

Speckled

d)

Fritillary

54.

A cell is observed under the microscope using a 10X eyepiece lens and a 40X objective lens. What is the total magnification?

a)

400X

b)

50X

c)

40X

d)

10X

55.

A cell is observed under the microscope using a 10X eyepiece lens and a 100X objective lens. What is the total magnification?

a)

100X

b)

1000X

c)

110X

d)

10X

56.

How many µm are in 1mm?

a)

10

b)

100

c)

1000

d)

10000

57.

If each division is 1/100th of a mm, approximately how long is this cheek cell?

a)

4.5mm

b)

0.45mm

c)

0.045mm

d)

0.0045mm

58.

In this image of a human cheek cell, A is...

a)

The cell membrane

b)

The nucleus

c)

The cytoplasm

d)

The cell wall

59.

In this image of a human cheek cell, B is...

a)

The cell membrane

b)

The nucleus

c)

The cytoplasm

d)

The cell wall

60.

In this image of a human cheek cell, C is...

a)

The cell membrane

b)

The nucleus

c)

The cytoplasm

d)

The cell wall

61.

Which organelle contains DNA and controls the cell?

a)

Nucleus

b)

Cytoplasm

c)

Cell membrane

d)

Chloroplast

62.

Which organelle is selectively permeable?

a)

Nucleus

b)

Cytoplasm

c)

Cell membrane

d)

Chloroplast

63.

Which organelle is where photosynthesis takes place?

a)

Nucleus

b)

Cytoplasm

c)

Cell membrane

d)

Chloroplast

64.

Which organelle is where mitochondria are found?

a)

Nucleus

b)

Cytoplasm

c)

Cell membrane

d)

Chloroplast

65.

Which cell is specialised to transport oxygen?

a)
b)
c)
d)
66.

Which cell is specialised for reproduction?

a)
b)
c)
d)
67.

Which cell is specialised to uptake water and minerals?

a)
b)
c)
d)
68.

Which cell is specialised to carry out photosynthesis?

a)
b)
c)
d)
69.

Which cell is specialised to clean the lungs?

a)
b)
c)
d)
70.

Which organ pumps blood?

a)
b)
c)
d)
e)
71.

Which organ exchanges gases?

a)
b)
c)
d)
e)
72.

Which organ is the uterus?

a)
b)
c)
d)
e)
73.

Which organ digests and absorbs food?

a)
b)
c)
d)
e)
74.

Which organ produces urine?

a)
b)
c)
d)
e)
75.

Which diagram is the respiratory system?

a)
b)
c)
d)
e)
76.

Which diagram is the female reproductive system?

a)
b)
c)
d)
e)
77.

Which diagram is the male reproductive system?

a)
b)
c)
d)
e)
78.

Which diagram is the female excretory system?

a)
b)
c)
d)
e)
79.

Which diagram is the digestive system?

a)
b)
c)
d)
e)
80.

Which 2 characteristics are features of exchange surfaces?

a)

High surface area

b)

Low surface area

c)

Short diffusion distance

d)

Long diffusion distance

81.

Which 2 characteristics are features of exchange surfaces?

a)

Ventilated

b)

Unventilated

c)

Rich blood supply

d)

Poor blood supply

82.

Which diagram shows a turgid cell?

a)
b)
83.

Which diagram shows a plasmolysed cell?

a)
b)
84.

Which diagram shows a cell in a concentrated solution?

a)
b)
85.

Which diagram shows a cell in a dilute solution?

a)
b)
86.

In an experiment on osmosis a 20g piece of potato increased in mass by 0.6g. What is the % change in mass?

a)

3%

b)

6%

c)

26%

d)

12%

87.

Which of the following methods of getting substances across a cell membrane requires energy?

a)

Diffusion

b)

Active transport

c)

Osmosis

88.

What part of an enzyme binds with the substrate?

a)

Active site

b)

Passive site

c)

Allosteric site

d)

Building site

89.

What reaction is catalysed by proteases?

a)

Break down proteins into amino acids

b)

Break down starches into sugars

c)

Break down lipids into fatty acids and glycerol

90.

What reaction is catalysed by lipases?

a)

Break down proteins into amino acids

b)

Break down starches into sugars

c)

Break down lipids into fatty acids and glycerol

91.

What reaction is catalysed by carbohydrases?

a)

Break down proteins into amino acids

b)

Break down starches into sugars

c)

Break down lipids into fatty acids and glycerol

92.

In which organ of the digestive system would you find an enzyme with an optimum pH of 2?

a)

Stomach

b)

Small intestine

c)

Mouth

d)

Large intestine

93.

What are the products of aerobic respiration?

a)

Glucose and oxygen

b)

Carbon dioxide and water

c)

Lactic acid

d)

Carbon monoxide

94.

What are the products of anaerobic respiration?

a)

Glucose and oxygen

b)

Carbon dioxide and water

c)

Lactic acid

d)

Carbon monoxide

95.

What type of respiration requires oxygen?

a)

Aerobic

b)

Anaerobic

96.

What type of respiration does not require oxygen?

a)

Aerobic

b)

Anaerobic

97.

Where in the cell does aerobic respiration take place?

a)

Nucleus

b)

Cytoplasm

c)

Mitochondria

d)

Cell membrane

98.

Which organ excretes carbon dioxide?

a)

Lungs

b)

Liver

c)

Heart

d)

Kidney

99.

Which organ breaks down lactic acid?

a)

Liver

b)

Lung

c)

Heart

d)

Bladder

100.

What is the molecule called that mitochondria produce when they respire glucose?

a)

ATP

b)

ADP

c)

DNA

d)

80p

101.

What is the waste energy from respiration given off as?

a)

Heat

b)

Light

c)

Sound

d)

Kinetic

102.

What happens to your breathing rate when you exercise?

a)

It increases

b)

It decreases

c)

It stays the same

103.

What happens to your pulse rate when you exercise?

a)

It increases

b)

It decreases

c)

It stays the same

104.

What is the correct name for the windpipe?

a)

Trachea

b)

Bronchus

c)

Bronchiole

d)

Larynx

105.

What is the correct name for the voice box?

a)

Trachea

b)

Bronchus

c)

Bronchiole

d)

Larynx

106.

What are the names of the air sacs in the lungs where gas exchange takes place?

a)

Alveoli

b)

Bronchi

c)

Bronchioles

d)

Intercostal muscles

107.
Label A is...
a)
Trachea
b)
Diagphragm
c)
Bronchus
d)
Alveolus
108.
Label B is...
a)
Trachea
b)
Diagphragm
c)
Bronchus
d)
Alveolus
109.
Label C is...
a)
Trachea
b)
Diagphragm
c)
Bronchus
d)
Alveolus
110.
Label D is...
a)
Trachea
b)
Diagphragm
c)
Bronchus
d)
Alveolus
111.

When you inspire the ribs move....

a)

Up and out

b)

Up and in

c)

Down and out

d)

Down and in

112.

When you expire the ribs move....

a)

Up and out

b)

Up and in

c)

Down and out

d)

Down and in

113.

When you inspire the diaphragm...

a)

Contracts and flattens

b)

Relaxes and flattens

c)

Contracts and rises

d)

Relaxes and rises

114.

When you expire the diaphragm...

a)

Contracts and flattens

b)

Relaxes and flattens

c)

Contracts and rises

d)

Relaxes and rises

115.

When you inspire the....

a)

Volume in the chest increases

b)

Volume in the chest decreases

116.

When you expire the....

a)

Volume in the chest increases

b)

Volume in the chest decreases

117.

When you expire the....

a)

Pressure in the chest increases

b)

Pressure in the chest decreases

118.

When you inspire the....

a)

Pressure in the chest increases

b)

Pressure in the chest decreases

119.

Inspired air contains more oxygen than expired air.

a)

True

b)

False

120.

Inspired air contains more carbon dioxide than expired air.

a)

True

b)

False

121.

Tar is a carcinogen.

a)

True

b)

False

122.

Which of these ingredients in cigarette smoke is an addictive stimulant?

a)

Tar

b)

Nicotine

c)

Carbon monoxide

d)

Carbon dioxide

123.

Which of these ingredients in cigarette smoke binds to haemoglobin and prevents red blood cells transporting oxygen?

a)

Tar

b)

Nicotine

c)

Carbon monoxide

d)

Carbon dioxide

124.

Which components of a balanced diet provide energy?

a)

Carbohydrates

b)

Proteins

c)

Fats

d)

Vitamins

125.

What component of a balanced diet is needed for growth and repair?

a)

Carbohydrates

b)

Proteins

c)

Fats

d)

Vitamins

126.

What component of a balanced diet is needed to prevent deficiency diseases like scurvy?

a)

Carbohydrates

b)

Proteins

c)

Fats

d)

Vitamins

127.

What is the positive test for starch?

a)

Iodine solution changes from orange to blue black

b)

Benedicts solution changes from blue to brick red

c)

Biuret solution changes from blue to purple

128.

What is the positive test for glucose?

a)

Iodine solution changes from orange to blue black

b)

Benedicts solution changes from blue to brick red

c)

Biuret solution changes from blue to purple

129.

What is the positive test for protein?

a)

Iodine solution changes from orange to blue black

b)

Benedicts solution changes from blue to brick red

c)

Biuret solution changes from blue to purple

130.

Which health problems can be caused by excess sugar in the diet?

a)

Tooth decay

b)

Type II diabetes

c)

High blood pressure

d)

Coronary heart disease

131.

Which health problem can be caused by excess salt in the diet?

a)

Tooth decay

b)

Type II diabetes

c)

High blood pressure

d)

Coronary heart disease

132.

Which health problem can be caused by excess saturated fat in the diet?

a)

Tooth decay

b)

Type II diabetes

c)

High blood pressure

d)

Coronary heart disease

133.

What is this apparatus used to find out?

a)

The energy content of foods

b)

The fat content of foods

c)

The protein content of foods

d)

The carbohydrate content of foods

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