Cells.

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Presentation transcript:

Cells

How cells work together Tissue Group of like Cells Organ Group of Organs Organ Systems

General Animal cells Have: Cell membrane Cytoplasm Nucleus Irregular shape

Adapted to their function Specialised Cells Adapted to their function

Red Blood Cells Function: Adaptation: To carry oxygen around the body Bi-concave cross-section to maximise surface area Do not have a nucleus Rounded edges to allow easier flow

Sperm Cell Adaptation: Function: Tail to swim Streamlined shape to allow easier swimming Pointed head to burrow into egg Function: To deliver genetic information to the egg cell

Nerve Cells Function: Adaptation: To carry electrical impulse around the body Adaptation: Long structure Can conduct electricity

White Blood Cells Function: Adaptation: To kill off infection / foreign bodies in the blood scream Adaptation: flexible shape to engulf disease organisms

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