Topic 8 Practice Paper: Transport in animals — question paper
IGCSE · Cambridge IGCSE Biology (Extended (Core + Supplement))
Topic 8 Practice Paper
Transport in animals
READ THESE INSTRUCTIONS FIRST
- Answer all questions.
- Section A contains ten multiple-choice questions. Choose one answer, A, B, C or D, for each.
- Section B contains structured questions. Write your answers in the spaces provided.
- The number of marks is given in brackets [ ] at the end of each question or part question.
- The total mark for this paper is 30.
Original practice material written against the Cambridge IGCSE Biology syllabus. It is not an official Cambridge examination paper. Topic 8: single and double circulation, heart structure and cycle, coronary heart disease, blood vessels, blood components and clotting.
| For Examiner’s Use | |
|---|---|
| Section A | / 10 |
| Section B | / 20 |
| Total | / 30 |
Section A: Multiple-choice questions[10 marks]
Choose one answer for each question. Each question is worth 1 mark.
- 1( )
Which statement about the mammalian circulatory system is correct?
- AValves ensure one-way flow of blood
- BBlood in arteries is always oxygenated
- CCapillaries have thick muscular walls
- DVeins carry blood away from the heart
- 2( )
In double circulation, the right side of the heart pumps blood to the
- Awhole body
- Bliver
- Clungs
- Dkidneys
- 3( )
Blood returns from the body to the heart in the
- Aaorta
- Bvena cava
- Cpulmonary vein
- Dcoronary artery
- 4( )
Why is the left ventricle wall thicker than the right ventricle wall?
- AIt pumps a larger volume of blood
- BIt stores reserve oxygen
- CIt holds the valves in place
- DIt pumps blood at higher pressure around the whole body
- 5( )
Which monitoring method records the electrical activity of the heart?
- APulse count
- BStethoscope
- CECG
- DBlood pressure cuff
- 6( )
A heart pumps 70 cm³ per beat at 75 beats per minute. During exercise it pumps 70 cm³ at 150 beats per minute. Cardiac output
- Adoubles
- Bstays the same
- Chalves
- Dtriples
- 7( )
Which blood vessel has the thickest wall relative to its lumen?
- AVein
- BArtery
- CCapillary
- DLacteal
- 8( )
Most carbon dioxide is transported in the
- Ared blood cells on haemoglobin
- Blymph
- Cplatelets
- Dplasma
- 9( )
Which white blood cell produces antibodies?
- APhagocyte
- BPlatelet
- CLymphocyte
- DRed blood cell
- 10( )
The mesh that forms a scab is made of
- Afibrin
- Bfibrinogen
- Chaemoglobin
- Dcollagen cells
Section B: Structured questions[20 marks]
Answer all questions in the spaces provided.
- 11
The heart is a double pump with four chambers.
- (a)
Name the chambers that receive blood, and state which side receives deoxygenated blood.
[2] - (b)
Name the valves between the atria and ventricles and state their function.
[2] - (c)
Explain why the septum is important for efficient oxygen delivery.
[2]
- (a)
- 12
A patient is told he has coronary heart disease and must change his lifestyle.
- (a)
Describe what happens in coronary heart disease and state one symptom or consequence.
[2] - (b)
State two risk factors from his lifestyle he can change, and two he cannot.
[2] - (c)
Explain two changes he should make and how each reduces the risk.
[3]
- (a)
- 13
Blood is a tissue containing several components suspended in plasma.
- (a)
Name the components of blood, other than plasma.
[3] - (b)
State four substances transported in the plasma.
[2] - (c)
Describe how a scab forms at a wound, using fibrinogen and fibrin.
[2]
- (a)
— End of paper —