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© Oxford University Press España S.A., 2012
Uni
t 1 The organisation of the human body
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Do now: (answer) 1. Are humans multicellular? 2. What is the smallest unit (structural and functional) of our body?
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Different human cells (OPTIC MICROSCOPE X100)
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A cell under electron microscope (X100 000)
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We need units much smaller than mm: μ (micron)
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From cells to organisms
What type of cell is this?
What are the names of the organelles shown in the illustration? What do they do?
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Try to name these organelles:
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Tissues and organs
What are the two types of tissues shown in the photos?
What are their functions?
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Neurons
• A picture • Under an opIc microscope
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Blood cells
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The skeletal and muscular systems
What two systems are shown in the illustration?
What is the relationship between their functions?
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What have we learned?
What is the relationship between image 1 and 2? What kind of cells are being extracted in image 3? Why are these cells used in gene therapy techniques?
Image 1 Image 2 Image 3
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Other living thins
• Bacterias: procaryotes • Virus: they are not cells