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Science

Growth in plants and humans

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All animal and plant cells have a nucleus, cytoplasm and a cell membrane. Plant cells also have a cell wall, chloroplasts and a vacuole. Different parts of the cell are adapted to perform different functions.

Humans grow at different rates at different stages in their lives. Gestation and infancy are the times of fastest growth.

Growth

Plant and animal cells

All animals and plants are made of cells. Animal cells and plant cells have features in common, such as a nucleus, cytoplasm and cell membrane. Plant cells also have a cell wall, chloroplasts and a large vacuole.

Cell functions in all cells

PartFunction
NucleusContains genetic material (DNA) which controls the activities of the cell
CytoplasmContains enzymes and other chemicals – it's the site of most cell processes and reactions
Cell membraneRegulates the movement of material into and out of the cell
Plant and animal cells both have a cell membrane, cytoplasm and nucleus. Plant cells also have chloroplasts, a vacuole and a cell wall.

Cell functions in plant cells

PartFunction
Cell wallSupports the cell, made of cellulose
ChloroplastAbsorbs light energy and uses it to produce sugars in photosynthesis. Chloroplasts mainly found in leaf cells.
Large vacuoleProvides support by exerting pressure on the cell contents. Contains a solution of minerals and other nutrients.

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