SS1: BIOLOGY - 1ST TERM
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Introduction to Biology | Week 17 Topics|2 Quizzes
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Recognizing Living Things | Week 23 Topics|1 Quiz
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Organisation of Life | Week 33 Topics|2 Quizzes
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Classification of Living Organisms | Week 46 Topics|2 Quizzes
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Kingdom Prokaryotae / Monera & Kingdom Protista | Week 54 Topics|3 Quizzes
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Kingdom Fungi & Kingdom Plantae | Week 610 Topics|2 Quizzes
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Kingdom Animalia I | Week 77 Topics|1 Quiz
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Kingdom Animalia II | Week 86 Topics|2 Quizzes
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The Cell | Week 94 Topics|1 Quiz
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The Cell Structure and Functions | Week 105 Topics|1 Quiz
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The Cell and its Environment | Week 115 Topics|1 Quiz
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Nutrition in Plants | Week 125 Topics|1 Quiz
Quizzes
Plasmolysis, Haemolysis, Crenation
Topic Content:
Plasmolysis:
When a living plant cell is placed or surrounded in a sugar or salt solution, a more concentrated or hypertonic solutionA hypertonic solution refers to a solution containing a higher solute concentration in comparison to the solute concentration in another solution, across a semipermeable membrane. More than the cell sap, water will be lost from the cell to the stronger solution resulting in exosmosis .
When the cell is left in the hypertonic solution for a long time, it will result in the pulling away of the cytoplasm from the cell wall, consequently, the cytoplasm will shrink and the cell wall will collapse. At this stage, we may say the cell is plasmolyzed .
Plasmolysis is the shrinking of the cytoplasm away from the cell wall when plant cells are immersed in a hypertonic solution.

Turgidity:
However, if a plant cell is placed in a hypotonic solutionHypotonic solution refers to a solution containing a lower solute concentration in comparison to the solute concentration in another solution, across a semipermeable membrane. Such a solution has a decreased solute... More , it behaves differently; water enters the cell by osmosis due to the fact that the cytoplasm solution is stronger than the water. This is called endosmosis .
As water enters
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Really helpful
Thanks alot . This helped at the last minute