1How is an organ built?
2Do cells help an organ to carry out its work?
3How is the complete human body built?
4Give the reason: the cell is regarded as the basis of life.
5Give the reason: cell, tissue and organ must act in coordination for a biological process to run.
6What happens to the life processes if the biochemical reactions in a living cell stop? Describe it on the basis of the interrelationship among cell, tissue and organ.
7Name the parts A, B, C and D shown in the diagram of the nucleus.
8What is the work of part B of the nucleus?
9Describe what happens to the work of a cell if it has no nucleus.
10Write the difference between a tissue and an organ.
11Write, in order, the chain that runs from the muscle fibre cell up to the digestive system.
12Why do the cells of the human body have different shapes? Give two examples.