CXC Integrated Science exam guide: Section A: Circulation

CXC Integrated Science exam guide: Circulation

CXC Integrated Science Exam Guide

Section A-The Organism

General objectives of the section:

Candidates should demonstrate an understanding of:


The interdependence of life processes;


The relationship between an organism and its environment;  

The relationship between structure and function of an organism;

Unit III: Circulation

Specific Objectives

Students should be able to:

Explanatory notes
Suggested Practical Activities

1. Explain the movement of substances in organisms

Diffusion and osmosis.

Experiments on diffusion and osmosis.

2. Discuss the need for transport systems within a living organism


Circulatory system: necessity, SA/ volume ratio; movement in plants-transpiration, movement of nutrients, structure of stem.

*Experiments on diffusion with agar cubes of different sizes to show how surface/ volume ratio affects total diffusion. Use osmosis apparatus to demonstrate the passage of water across a semi-permeable membrane.

3. Discuss the structure and functions of the circulatory system in man


Circulatory system: features of, cells and their functions; vessels, heart-structure and heart beat; names of major vessels associated with heart only.


4. Define blood groups A, B, AB an O


Blood groups; antigen and antibody for each group, precaution in transfusion and handling; include spread of HIV; Rh factor-risk in pregnancy, precautions.


5. Discuss possible causes of hypertension and heart attacks.


Information gathering from clinics, hospitals and doctors.

Go to Section A: unit IV: Respiration

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danya1 (not verified)
science is and interesting

science is and interesting subject is very intersting

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guest (not verified)

maths is giving me a very difficult time

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this is not helpful i will need a sample multiple choice for science

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