Curriculum
Course: AQA A Level Biology 7402
Login

Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

3.4.6 Adaptations in Haemoglobin – Unit exam questions

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 12
  • Passing grade: B+
Start Quiz
1.
Why does heart rate increase during exercise?
To cool the blood
To reduce blood pressure
To lower the rate of respiration
To supply more oxygen and glucose to muscles
2.
Which statement best describes Gas exchange surface?
Muscles between the ribs that contract to pull the ribcage down and in during forced expiration.
A surface where oxygen diffuses into and carbon dioxide diffuses out of the blood.
The windpipe; a tube supported by C-shaped rings of cartilage carrying air to the bronchi.
The two tubes branching from the trachea, one to each lung.
3.
During inspiration the diaphragm:
Relaxes and domes
Contracts and domes
Relaxes and flattens
Contracts and flattens
4.
Which change would decrease diffusion rate?
Thicker membrane
Larger area
Steeper gradient
More capillaries
5.
Egg water loss in dry air is shown. Which egg type allowed full life on land?
Frog egg without shell
Fish egg
Both equally
Amniotic egg with shell
6.
Which statement best describes Cardiac output?
The pacemaker in the right atrium that initiates each heartbeat.
Volume of blood pumped by one ventricle per minute.
Build-up of fatty plaque (atheroma) in artery walls.
Blood passes through the heart twice per complete circuit: pulmonary and systemic.
7.
IGCSE Biology 11.1 Gas exchange in humans WITH ALVEOLI - Question 8
IGCSE Biology 11.1 Gas exchange in humans WITH ALVEOLI - Question 8
A
B
C
D
8.
Which cube has the largest surface area to volume ratio?
4 cm cube
3 cm cube
2 cm cube
1 cm cube
9.
Why must the shoot be cut and fitted to the potometer under water?
To wash the leaves
To add sugar
To kill the shoot
To stop air entering the xylem and breaking the water column
10.
IGCSE Biology 11.1 Gas exchange in humans WITH ALVEOLI - Question 1
IGCSE Biology 11.1 Gas exchange in humans WITH ALVEOLI - Question 1
A
B
C
D
11.
Which statement best describes Lymph?
Tendency of water to move into blood due to plasma proteins.
Graph of percentage saturation of haemoglobin against partial pressure of oxygen.
Binding of one O2 changes haemoglobin shape making further binding easier.
Excess tissue fluid drained into lymph vessels.
12.
Potato cylinders gain mass in a sucrose solution. What does this show?
The solution has a higher water potential than the cells
Sucrose entered the cells
The cells are dead
The solution is more concentrated than the cells
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
Part of 3. Exchange and Transport — see every lesson and quiz in this unit.
Accepted payment methods