[PDF] [PDF] Cell Biology

[PDF] Worksheet - Osmosis & Tonicity - Buckeye Valley

Worksheet - Osmosis Tonicity READ ME In each H This diagram shows the cell in a(n) (circle one) hypotonic / hypertonic / isotonic solution Beaker 2

[PDF] Cell Biology

Osmosis – Hypotonic, Isotonic and Hypertonic solutions Before completing this worksheet, watch the following clips for background information

[PDF] Osmosis Practice Key - Mayfield City Schools

Draw an arrow to show the net movement of water 3 Label the type of solution hypertonic, hypotonic, or isotonic on the line below the picture 85

[PDF] Cell Membrane & Tonicity Worksheet

In which direction does water move across membranes, up or down the concentration gradient? DOWN Define these 3 terms: a isotonic- THE CONCENTRATION 

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Cell Membrane Tonicity Worksheet Composition of the Cell high water concentration Label the tonicity for each solution (isotonic, hypotonic, or hypertonic): 

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OSMOSIS WORKSHEET Name: Part One: Color the correct box in the chart below: STATEMENT Isotonic Cell(s) Hypotonic Cell(s) Hypertonic Cell(s) 1

[PDF] biology osmosis wspdf - Crestwood Local Schools

Isotonic Solution Hypotonic Solution Hypertonic Solution 1 The concentration of dissolved substances (stuff) in the solution is lower than the concentration 

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3 Types of Solutions: • Hypotonic Solution • Isotonic Solution • Hypertonic Solution What type of solution are these cells in? Hypertonic Hypotonic Isotonic

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Cell Biology ʹ Module 2

Osmosis ʹ Hypotonic, Isotonic and Hypertonic solutions Before completing this worksheet, watch the following clips for background information. Hypertonic, Hypotonic and Isotonic solutions by BOGOBiology.

Diffusion and Osmosis by Science Sauce.

Activity 1 ʹUse the word bank to complete the cloze exercise

Osmosis is defined as the movement of __________ across a semi-permeable membrane (like a cell membrane).

Like all forms of diffusion, osmosis follows a concentration gradient, where water will move from ________ of fairly

high water content (eg pure water) to areas of fairly low water content (eg concentrated solutions).

Cells contain solutions of ______________ substances. If a cell were to be placed into pure water, the water would

move across the membrane _________ the cell. This inrush of water would eventually cause the cell to _________ -

a process called lysis. In this case: the water is said to be hypotonic.

If a cell was placed in a concentrated solution of salt or sugar, the relative levels of water would be higher inside the

cell than out, and water would leave ______ cell, causing it to shrivel. Salt and sugar can cross the cell membrane,

but they need to do this via specialized channels and therefore their movement is ___________ than that of water

which diffuses quickly across the membrane. In this case: the solution is said to be ______________.

placed in isotonic solutions do not lyse or ___________. For this reason, isotonic solutions are used to manipulate

and wash cells.

Word Bank

Dissolved, slower, areas, shrivel, the, water, burst, hypertonic, into

Activity 2

Construct a labelled diagram to express what happens when a cell undergoes lysis.

The following investigation uses mammalian cells grown in culture. In the previous module, you learnt about the

origin of HeLa cells. SPARQ-ed teachers prepare the HeLa cells by growing them in media in a 6 well plate. Each well

in the plate can be used as a separate test chamber. HeLa cells stick to the walls of the chamber, allowing the

removal of the growth medium. We can then add other solutions and observe how the cells react under the

microscope.

SPARQ-ed teachers prepared a 15g/L stock solution of sodium chloride (salt). The stock solution needs to be diluted

to provide a range of solutions to test.

Activity 3

Calculate the volumes of stock solution and water to make each solution. 0g/L and 15g/L are done as an example for

you.

Concentration 0g/L 3g/L 6g/L 9g/L 12g/L 15g/L

Dilution from 15g/L 0 in 15 15 in 15

Volume of stock

solution needed

0mL 15mL

Volume of water

needed

15mL 0mL

Total Volume 15mL 15mL

Before the experiment took place. The cells, in their pink growing medium, were placed on the Floid Microscope

and observed.

Activity 4

Predict what will happen to the cells at 3 different salt concentrations (eg 0g/L, 9g/L and 15g/L)

Cognitive Verbs and Sentence starters

Cognitive Verb QCAA Definition Sentence Starters

Use operate or put into effect; apply knowledge or rules to put theory into practice n/a Construct create or put together (e.g. an argument) by arranging ideas or items; display information in a diagrammatic or logical form; make; build n/a Calculate determine or find (e.g. a number, answer) by using mathematical processes; obtain a numerical answer showing the relevant stages in the working; ascertain/determine from given facts, figures or information n/a Predict give an expected result of an upcoming action or event; suggest what may happen based on available informationquotesdbs_dbs20.pdfusesText_26