IB Biology topic 1
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6 Terms
1
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Cell theory
(1.1)
(1.1)
_Living organisms are composed of cells
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_The cell is the basic unit of life
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_Cells can only arise from pre-existing cells
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_The cell is the basic unit of life
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_Cells can only arise from pre-existing cells
2
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Cell theory support evidences
(1.1)
(1.1)
_Invention of light microscope
_Components of cell can not survive independently
_No organism made up of less than one cell
_Pasteur’s chicken soup experiment
_Components of cell can not survive independently
_No organism made up of less than one cell
_Pasteur’s chicken soup experiment
3
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Cell theory exceptions
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(1.1)
_Striated muscle have multiple nuclei and are surrounded by a single, continuous membrane)
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_Giant algae (unicellular organisms that are very large in size, around 7 cm)
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_Aseptate hyphae (lack partitioning and have a continuous cytoplasm)
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_Giant algae (unicellular organisms that are very large in size, around 7 cm)
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_Aseptate hyphae (lack partitioning and have a continuous cytoplasm)
4
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Unicellular
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(1.1)
5
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7 functions of life
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(1.1)
Mr.Gren H:
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Metabolism
Response
Growth
Reproduction
Excretion
Nutrition
Homeostasis
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Metabolism
Response
Growth
Reproduction
Excretion
Nutrition
Homeostasis
6
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Magnification formula