Vacuoles and Cell Sap

Focuses on plant vacuoles (tonoplast, cell sap, hyperosmotic conditions), contractile vacuoles in single-celled organisms, and the role of vacuoles in storing toxic compounds

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QUESTION OF
Views #: 14
Questions #: 8
Time: 10 minutes
Pass Score: 80.0%
Style
Mode

Complete the sentence

1 pts

In mature plant cells, one organelle dominates the interior of the cell, often pushing the cytoplasm and other organelles to the periphery.

Much of the total volume of most plant cells is occupied by a single large (1).

Please drag and drop the selected option in the right place or type it instead
vacuole
nucleus
chloroplast
mitochondrion
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Correct Answer

Explanation

Fill in blanks

1 pts

The plant vacuole has its own bounding membrane with a specific name, and the liquid it contains also has a specific term.

The membrane is called the (1), and the fluid inside is called (2).

Please drag and drop the selected option in the right place or type it instead
plasma membrane
tonoplast
cell sap
cytosol
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Correct Answer

Explanation

Cell sap is usually hyperosmotic relative to the external medium. What does this mean for water movement?

1 pts
volume_mute

The concentration of dissolved substances in cell sap is usually higher than in the fluid surrounding the cell.

What effect does this have on water movement into the vacuole?

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Correct Answer

Explanation

Select ALL substances that can be found dissolved in cell sap.

1 pts
volume_mute

Cell sap is not pure water - it contains a variety of dissolved substances. Select ALL substances that vacuoles can contain.

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Explanation

What is the function of contractile vacuoles in single-celled organisms?

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Some single-celled organisms possess a specialized type of vacuole not found in typical plant or animal cells.

What is the primary function of contractile vacuoles?

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Explanation

How are food vacuoles formed in cells that use phagocytosis or pinocytosis?

1 pts
volume_mute

Many cells can take in materials from their environment by engulfing them. How are the resulting vacuoles formed?

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Correct Answer

Explanation

Match each vacuole type to its correct description.

1 pts

Different types of vacuoles perform different functions. Match each vacuole type to its correct description.

To complete the line match

  1. Click on an item in the first group
  2. Click on the match in the second group

To delete a match, double click on a line

Vacuole Type

Contractile vacuole
Food vacuole
Central vacuole

Description

Found in single-celled organisms; expels excess water and waste
Formed by phagocytosis or pinocytosis; contains ingested material for digestion
Large membrane-bound sac in plant cells storing cell sap and maintaining turgor
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Explanation

True or False: Many plant species store toxic chemicals in their vacuoles as a defense against being eaten.

1 pts
volume_mute

True or False:

Many plant species store toxic chemicals in their vacuoles, and if an animal eats the plant and ruptures the vacuoles, the contents can have an adverse effect on the animal.

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Explanation

✕
0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
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