The Biological Effects of Tonicity

The Biological Effects of Tonicity

Assessment

Interactive Video

Geography, Science, Biology, Chemistry, Health Sciences

6th - 9th Grade

Hard

Created by

Quizizz Content

FREE Resource

The video explains tonicity, which is the ability of external solutions to change the water content inside cells. It covers three types of solutions: hypotonic, isotonic, and hypertonic. Hypotonic solutions cause cells to swell, isotonic solutions maintain equilibrium, and hypertonic solutions lead to cell shrinkage. The effects on both red blood cells and plant cells are discussed, highlighting the role of osmosis in these processes.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to a red blood cell when placed in a hypotonic solution?

It expands and bursts.

It becomes rigid.

It remains unchanged.

It shrivels up.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do plant cells avoid bursting in a hypotonic environment?

By increasing solute concentration inside.

Through their strong cell walls.

By shrinking their vacuoles.

By losing water rapidly.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an isotonic solution, what happens to the water movement across the cell membrane?

Water moves only out of the cell.

Water movement stops completely.

Water moves only into the cell.

Water moves in and out at the same rate.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the solute concentration of an isotonic saline solution compared to blood plasma?

Varies with temperature.

Equal to blood plasma.

Lower than blood plasma.

Higher than blood plasma.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What effect does a hypertonic solution have on plant cells?

It causes them to burst.

It makes them swell.

It leads to wilting.

It has no effect.