2. Organisation of the organism

2.2) Levels of organisation

2.2) Levels of organisation Most cells, when they have finished dividing and growing, become specialised. They do one particular job They develop a distinct shape Special kinds of chemical change take place in their cytoplasm. ‘Division of labour’- the specialisation...

read more

2.3) Size of specimens

2.3) Size of specimens   1000000 micrometres in a metre 10000 micrometres in a centimetre 1000 micrometres in a millimetre

read more

2.1) Cell structure and organisation

2.1) Cell structure and organisation Cytoplasm contains ribosomes on rough endoplasmic reticulum and vesicles. Almost all cells, except prokaryotes, have mitochondria and  rough endoplasmic reticulum. Mitochondria are responsible for producing energy from food...

read more