2020
What type of cell is shown in Figure 1? [1 mark]
Tick (✓) one box.
✓
2. Figure 2 shows an algal cell.
What is the function of the cell wall? [1 mark]
Tick (✓) one box.
✓
3. The algal cell is green.
Which part of the algal cell makes it green in colour? [1 mark]
Tick (✓) one box.
✓
4. Cells contain sub-cellular structures.
Draw one line from each structure to its function. [3 marks]
5. A student prepared a microscope slide of cheek cells.
The student looked at one cell using a microscope.
Figure 3 shows the image the student saw.
What should the student do to get a clear image?
[1 mark]
Tick (✓) one box.
✓
6. Which process makes two identical new body cells for growth and repair? [1 mark]
Tick (✓) one box.
✓
7. Figure 4 shows the three stages of a cell cycle.
Draw one line from each stage of the cell cycle to what happens during that stage.
[2 marks]
8. A cell divides to form two new cells every 24 hours.
How many days will it take for the original cell to divide into 8 cells? [1 mark]
Tick (✓) one box.
✓
9. The genetic material is made of many small sections.
Each section codes for a specific protein.
What is one section of genetic material on a chromosome called? [1 mark]
Tick (✓) one box.
✓
10. Name one type of microorganism that causes disease in humans.
Do not refer to viruses in your answer. [1 mark]
• bacteria
• fungi
• protists
11. Which two defence systems prevent microorganisms infecting the human body?
[2 marks]
Tick (✓) two boxes.
✓
✓
12. If microorganisms enter the human body the immune system can destroy the microorganisms. How does the immune system destroy microorganisms? [1 mark]
Tick (✓) one box.
✓
13. Vaccinations prevent people becoming ill with diseases such as measles.
Complete the sentences. [2 marks]
In a vaccine the measles virus is ____________________ .
If the measles virus enters the body after vaccination the immune system reaction
will be __________________________.
faster
weakened
14. Figure 5 shows part of a deadly nightshade plant.
How will the poisonous berries help the deadly nightshade plant to survive? [1 mark]
will stop animals / herbivores eating it
14. Figure 5 shows part of a deadly nightshade plant.
Which type of defence mechanism are the berries? [1 mark]
Tick (✓) one box.
✓
15. Figure 6 shows part of a gorse plant.
Suggest how the gorse plant is adapted to defend itself. [1 mark]
thorns / spikes / spines / prickles
to stop animals / herbivores eating it
16. The green leaves of the gorse plant make glucose for the plant to use.
What are two uses of glucose in the gorse plant? [2 marks]
Tick (✓) two boxes.
✓
✓
18. A drug can be extracted from gorse seeds.
Doctors want to trial the drug from gorse seeds to see if it can treat diarrhoea.
Which two factors must the doctors test the drug for in the trial? [2 marks]
Tick (✓) two boxes.
✓
✓
19. In the trial some patients will take tablets made from gorse seeds and some patients
will take tablets made from sugar.
What are the tablets made from sugar called? [1 mark]
Tick (✓) one box.
✓
20. Blood is transported around the body in blood vessels.
Draw one line from each type of blood vessel to the structure of the blood vessel.
[2 marks]
21. Figure 7 shows blood viewed through a microscope.
Name A and B in Figure 9. [2 marks]
A – white blood cell(s)
B – platelet(s)
22. The blood components are carried around the body in the liquid part of the blood.
What is the liquid part of the blood called? [1 mark]
Tick (✓) one box.
✓
23. Figure 8 shows part of a leaf.
Molecules of carbon dioxide diffuse from the air into the mesophyll cells.
Which two changes will increase the rate at which carbon dioxide diffuses into the mesophyll cells? [2 marks]
Tick (✓) two boxes.
✓
✓
24. Figure 9 shows three types of cell.
Give two similarities between the prokaryotic cell and the eukaryotic cells
in Figure 5.[2 marks]
• cytoplasm
• cell membrane
• DNA / genetic material
• ribosomes
25. Name the type of cell division that produces genetically identical body cells for growth and repair. [1 mark]
Mitosis
26. Figure 10 shows a cell cycle.
What percentage of the time for one cell cycle is represented by stage 2 and stage 3
together? [1 mark]
Tick (✓) one box.
✓
27. Lipases break down lipids.
Which two products are formed when lipids are broken down? [2 marks]
Tick (✓) one box.
✓
✓
28. For many years drugs have been extracted from plants.
Which plant material was chewed as a painkiller? [1 mark]
Tick (✓) one box.
✓