AQA GCSE Biology (8461/1H) Paper 1H – | Complete Model Answers & Detailed Rationales | Higher Tier (100 Marks Explained)

GCSE Biology
AQA GCSE Biology (8461/1H) Paper 1H – | Complete Model

Answers & Detailed Rationales | Higher Tier (100 Marks

Explained)
ASCORERS STUVIA

This Document Contains:

 Part 1 → Question 1: Coronary Heart Disease

 Part 2 → Question 2: Cystic Fibrosis

 Part 3 → Question 3: Carbohydrates in Bread & Cake

 Part 4 → Question 4: Plant Tissues

 Part 5 → Question 5: Osmosis in Potatoes

 Part 6 → Question 6: Pathogens & Antibiotic Resistance

 Part 7 → Question 7: Photosynthesis & Limiting Factors

 Part 8 → Question 8: Cancer & Cell Division

NB: Answer Key At The End Of The Questions

, 2
Do not write
outside the
Answer all questions in the spaces provided. box




0 1 A person has coronary heart disease.



0 1 . 1 Which blood vessels are affected by coronary heart disease?
[1 mark]
Tick () one box.


Arteries


Capillaries


Veins




A person’s heart stops beating.

The person stops breathing.

A first-aider pushes down on the person’s chest.

Pushing down on the person’s chest puts pressure on the heart.


0 1
. 2 Explain why putting pressure on the heart helps the person.
[2 marks]




IB/M/Jun24/8461/1H

, 3
Do not write
outside the
0 1 . 3 The first-aider also forces air into the person’s lungs by blowing into their mouth. box



Describe how forcing air into the person’s lungs helps the person.
[1 mark]




0 1 . 4 The person’s heart starts to beat again and the person starts breathing.

The person has a high level of cholesterol in their blood.


Name one type of drug that would decrease the level of cholesterol in the
person’s blood.
[1 mark]




0 1 . 5 A doctor decides that the person needs to have a stent fitted.

Explain how a stent works to treat coronary heart disease.
[2 marks]




Question 1 continues on the next page




Turn over ►


IB/M/Jun24/8461/1H

, 4
Do not write
outside the
Table 1 shows the effect of smoking on the risk of developing different box

cardiovascular diseases.

Table 1


Percentage (%) increase in risk
Cardiovascular
compared to people who have
disease
never smoked

E 14

F 20

G 29

H 70




0 1 . 6 Give two conclusions that can be made from the data in Table 1.
[2 marks]

1



2




0 1 . 7 Complete Figure 1.

You should:
 label the y-axis
 add the correct scale to the y-axis
 plot the data from Table 1
 label each bar.


The bar for cardiovascular disease E has been plotted for you.
[4 marks]




IB/M/Jun24/8461/1H