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Why Cells Shrink, Swell, or Stay the Same: A Kid's Guide to Solutions

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anzley holloway

10/20/2023

Biology

(hyper/hypo/iso) tonic solutions

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Biology

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The Carbon Cycle

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The Carbon Cycle

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The Carbon Cycle

Why Cells Shrink, Swell, or Stay the Same: A Kid's Guide to Solutions

Osmosis in cells is driven by solute concentration differences, causing water movement that affects cell size and shape.

  • Hypertonic solution cell shrinking occurs when higher solute concentrations outside the cell drive water outward
  • Isotonic solutions no net movement maintains cell size due to equal solute concentrations
  • Hypotonic solution cell swelling happens when higher internal solute levels draw water into the cell
  • Water movement across cell membranes is essential for maintaining cellular homeostasis
  • Understanding osmotic principles is crucial for cell biology and physiological processes
...

10/20/2023

63

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Subjects

Biology

The Carbon Cycle

The Carbon Cycle

The Carbon Cycle

 

Biology

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Oct 20, 2023

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1 page

Why Cells Shrink, Swell, or Stay the Same: A Kid's Guide to Solutions

A

anzley holloway

@ac1012

Osmosis in cells is driven by solute concentration differences, causing water movement that affects cell size and shape.

  • Hypertonic solution cell shrinking occurs when higher solute concentrations outside the cell drive water outward
  • Isotonic solutions no net movementmaintains cell... Show more
hypertonic • high solute outside high water inside •water moves out • cell shrinks isotonic •equal solute equal water solutions •no net move

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Understanding Cellular Osmosis and Water Movement

This page explores the fundamental concepts of osmotic pressure and its effects on cells. The content details three key osmotic conditions and their impact on cellular structure.

Definition: Osmosis is the movement of water molecules across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

Highlight: The direction of water movement is determined by the relative solute concentrations inside and outside the cell.

Example: In a hypertonic solution cell shrinking occurs because water moves out of the cell when there's a higher solute concentration outside.

Vocabulary:

  • Hypertonic: Having a higher solute concentration outside the cell
  • Isotonic: Having equal solute concentrations inside and outside the cell
  • Hypotonic: Having a lower solute concentration outside the cell

Highlight: In isotonic solutions no net movement of water occurs, maintaining cell size and shape.

Example: When cells are placed in a hypotonic solution cell swelling occurs as water moves into the cell due to higher internal solute concentration.

The page includes visual representations showing water molecule movement (H₂O) under different osmotic conditions, making it easier to understand these complex cellular processes.

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