LAB 03 OSMOSIS DIFFUSION AND TONICITY

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This formative assessment covers key definitions related to diffusion, osmosis, homeostasis, solubility, and tonicity. It aims to ensure students understand and can differentiate between these critical biological concepts.

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What is diffusion?

Movement of a solute down its concentration gradient, from an area of higher concentration to an area of lower concentration.

Movement of water across a membrane.

The ability of a substance to dissolve in a solvent.

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Homeostasis involves the maintenance of a constant internal environment.

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Homeostasis is the maintenance of a constant internal environment via

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How does osmosis differ from diffusion?

Osmosis involves the movement of solutes, while diffusion involves water.

Osmosis involves the movement of water.

Osmosis happens only in living organisms.

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Define solubility: The ability of a _ to dissolve in a _.

solvent, solute

substance, solute

substance, solvent

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Which statement best describes an isotonic solution?

It has a lower solute concentration outside the cell compared to inside.

It has a higher solute concentration outside the cell, causing cells to shrink.

The solute concentration is equal inside and outside the cell.

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Which statement best describes a hypertonic solution?

It has a lower solute concentration outside the cell compared to inside.

It has a higher solute concentration outside the cell, causing cells to shrink.

The solute concentration is equal inside and outside the cell.

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Which statement best describes a hypotonic solution?

It has a lower solute concentration outside the cell compared to inside.

It has a higher solute concentration outside the cell, causing cells to shrink.

The solute concentration is equal inside and outside the cell.

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Molecular Weight: 1 mole = __________ particles

Homeostasis experiment:

recording pulse rate
8x for 15 secs
graphing

Osmosis experiment:

observe the rate of movement of distilled water into a dyed sucrose solution through a selectively permeable membrane and the dependance of those rate upon solute concentration.

solubility experiment:

pipette a succession of substances in a large test tube to see how they interact

concentration and tonicity experiment:

use red blood as osmometers
these cells will crenate or swell depending upon the concentration of the solution

LAB 03 OSMOSIS DIFFUSION AND TONICITY

What is diffusion?

Homeostasis involves the maintenance of a constant internal environment.

Homeostasis is the maintenance of a constant internal environment via

How does osmosis differ from diffusion?

Define solubility: The ability of a _______ to dissolve in a _______.

Which statement best describes an isotonic solution?

Which statement best describes a hypertonic solution?

Which statement best describes a hypotonic solution?

Molecular Weight: 1 mole = __________ particles

What is diffusion?

Homeostasis involves the maintenance of a constant internal environment.

Homeostasis is the maintenance of a constant internal environment via

How does osmosis differ from diffusion?

Define solubility: The ability of a _______ to dissolve in a _______.

Which statement best describes an isotonic solution?

Which statement best describes a hypertonic solution?

Which statement best describes a hypotonic solution?

Molecular Weight: 1 mole = __________ particles

Define solubility: The ability of a _ to dissolve in a _.

Define solubility: The ability of a _ to dissolve in a _.