Exam (elaborations)

Exam circulation

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Course
Lifescience

Institution
Lifescience

This exam covers the topic of circulation and the human blood system. It has fifty marks allocated to it. The style and ability level of the questions varies to test the student's exam skills. A full mark scheme is also included.

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Uploaded on September 4, 2023
Number of pages 18
Written in 2023/2024
Type Exam (elaborations)
Contains Questions & answers

circulation

Institution
Lifescience
Course
Lifescience

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Grade 10

BLOOD AND CIRCULATION
THEORY

50 Marks
Time: 1 hour Timings:

Examiner: S Hartley Moderator: Name

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY:

1. This question paper consists of 11 pages with 5 questions. Please
check that your question paper is complete.
2. Answer ALL the questions.
3. Number your answers exactly as they appear in the question paper.
4. It is in your own interest to write legibly and to present your work
neatly.
5. 1. Show all the formulas and equations you use.
2. Show all calculations and round off answers to 2 decimal places.
All answers should have the correct units.
6. A non-programmable scientific calculator may be used.
7. Please complete all diagrams/graphs in PENCIL.
____________________________________________________________________

MCQ
Four options are provided as possible answers to the following questions. Each

,question has only ONE correct answer. Choose the answer and write just its letter on
your answer paper. Next to question number.

1(i)
A capillary will move oxygen by?

A) Osmosis
B) Diffusion
C) Active transport
D) Perfusion

1(ii)

A

A sample of blood was taken and processed. In the above diagram of the
sample what would be the portion marked ‘A’?

A) Plasma
B) White blood cells
C) Red blood cells
D) Platelets

1(iii)
From question 1(ii) how would the blood have been separated into its various parts?

A) Centrifugation.
B) Filtration.
C) Evaporation.
D) Chromatography.

1(iv)
White blood cells are made where in the human body?

A) Liver
B) Bone marrow
C) Pancreas
D) Lymph nodes

1(v)
New Red blood cell production is generated by?

, A) Lack of exercise.
B) Low altitudes.
C) High levels of oxygen in the blood.
D) Low levels of oxygen in the blood.

1(vi)

The diagram shows which constituent of human blood?

A) Platelets.
B) Antibodies.
C) White blood cell.
D) Plasma.

(6)

Q2.

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