Cambridge IGCSE Biology (Paper One)

Question 1

Which characteristic of living organisms is shown by the plant in the diagram?

A - excretion
B - reproduction
C -respiration
D -sensitivity

Answer 1

D - Sensitivity

Question 2

Humans have the scientific name Homo Sapiens
What do the 2 parts of this name refer to?

A - Genus and Species
B - Group and Genus
C - Kingdom and Genus
D - Kingdom and Species

Answer 2

A - Genus and Species

Question 3

Use the key to identify the stonefly larva

1 has two cerci at the end of the abdomen
has three cerci at the end of the abdomen

2 abdomen longer than thorax —– A
Thorax longer than abdomen ——- B

3 Gills visible on the thorax ———- C
Gills not visible ————————- D

Answer 3

A - Abdomen is longer than thorax

Question 4

Which part of a plant cell controls the movement of substances into and out of the cell?

A - cell membrane
B - cell wall
C - Cytoplasm
D - Vacuole

Answer 4

A - Cell membrane

Question 5

What is the function of this specialised plant cell?

A - it absorbs carbon dioxide from the air
B - it absorbs ions from the soil
C - it transports sucrose from leaves
D - it transports water in stems

Answer 5

B - it absorbs ions from the soil

Question 6

the photograph shows a chloroplast Magnified x 7000
the size of the image is 70 mm

what is the actual size of the chloroplast?

A - 0.0001 mm
B - 0.001 mm
C - 0.01 mm
D - 100 mm

Answer 6

C - 0.01 mm

Question 7

How do carbon dioxide and oxygen move into and out of a mesophyll cell?

A - active transport
B - diffusion
C - Osmosis
D - Transpiration

Answer 7

B - Diffusion

Question 8

A - occurs through a cell membrane - yes
A - particles move from high conc to lower conc - yes
A - uses energy for respiration - yes

B - occurs through a cell membrane - yes
B - particles move from high conc to lower conc - yes
B - uses energy for respiration - No

C - occurs through a cell membrane - yes
C - particles move from high conc to lower conc - no
C - uses energy for respiration - yes

D - occurs through a cell membrane - No
D - particles move from high conc to lower conc - yes
D - uses energy for respiration - Yes

Answer 8

C

Question 9

Total sugar including reducing sugar /g per 100g — 3.7

Starch /g per 100g —- 0.0

The onion is tested with Benedicts solution and iodine solution
which set of results is correct?

Benedicts Solution-
A – Blue
B – Blue
C – Brick Red
D – Brick Red

Iodine Solution
A – Blue-black
B – Brown
C – Blue-black
D – Brown

Answer 9

D – Brick Red
D – Brown

Question 10

Which Diagram Has three correct labels

Answer 10

C - Substrate - Active Site - Enzyme

Question 11

Why do plants need nitrate ions?

Answer 11

A - Gallbladder

Question 12

In which part of the body of a mammal does physical digestion occur?

Answer 12

C - Mouth

Question 13

Which structure produces lipase?

Answer 13

C - Lipase