Friday, 11 November 2016


All living things are made up of cells. Cells are the basic units of life. They are living things. Cells are very small.
Cells carry out the basic life processes of interaction, nutrition and reproduction.

Animal cell.
The nucleus controls everything that happens inside the cell.
The membrane surrounds and protects the cell.
In the cytoplasm, we find special organelles that carry out different life processes.
The cytoplasm is a thick, clear liquid protected by the membrane.

Plant cell.
In the cytoplasm of plant cells,there are special organelles called chloroplasts. They contain a green liquid called chlorophyll.
Plant cells have a rigid cell wall around the membrane. This helps support the plant.
Plant cells have a vacuole, which is like a bag. Food and water are stored in the vacuole. When a plant doesn't have enough water, the plant loses its rigid structure and begins to wilt.

Unicellular and multicellular organisms.
Some living things, such as bacteria or yeast, are made up of only one cell. They're unicellular organisms.
Other living things, such as trees or butterflies, have many cells. They're multicellular organisms.

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