2.1 Cell structure (3)

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1.

Describe the meaning of the terms: cell, tissue, organ, organ system and organism. Explain how these levels of organization are related to each other.

2.

State that specification of cells have specific functions. Explain how the structure of a ciliated cell is adapted to its function in the human respiratory system.

3.

Compare and contrast the structure of a Gram-positive bacterium and a Gram-negative bacterium, focusing on the cell wall. Include a diagram to illustrate your answer.