Animal and plant cells

structure and functions of each cell and chemical reactions in cells

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Animal cells- structure and function

NUCLEUS - controls all the activities of the cell. contains instructions for making new cells or new organisms. 

CYTOPLASM - a liquid gel in which most chemical reactions need for life take place, eg respiration.

CELL MEMBRANE - controls the passage of substances in and out of the cell.

MITOCHONDRIA - structures in the cytoplasm where oygen is used and most of the energy is released during respiration. 

RIBOSOMES - all the proteins needed in the cells are made here, where protein synthesis takes place.

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Plant cells- structure and function

PLANT CELLS HAVE ALL THE FEATURES OF A TYPICAL ANIMAL CELL

CELL WALL - made of cellulose which strengthens the cell and gives it support. all plant cells have this.

many but not all plant cells contain:

CHLOROPLASTS - found in all the green parts of the plant. they are green due to them containing the green substance chlorophyll which gives the plant its colour. they absorb light energy to make food by photosynthesis. 

A PERMANENT VACUOLE - a space in the cytoplasm filled with cell sap which is important for keeping the cells rigid to support the plant. 

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