Why is drinking sea water harmful to humans?

It causes cells to shrink and leads to dehydration.

It causes cells to swell and burst.

What is the purpose of adding shampoo during the DNA extraction process from a banana?

To dissolve the cell and nuclear membranes.

To separate the DNA from proteins.

What is the main function of the cell membrane in regulating substances entering and exiting a cell?

Maintaining selective permeability.

Providing structural support to the cell.

Facilitating rapid cell division.

In the Fluid Mosaic Model of the cell membrane, what does the term "fluid" refer to?

The ability of components like phospholipids and proteins to move.

The watery environment inside the cell.

The presence of water channels within the membrane.

The liquid state of the cell's cytoplasm.

What is a key role of cholesterol within the cell membrane?

To connect phospholipids and prevent them from drifting too quickly or getting too close.

To act as a transport channel for large molecules.

To provide energy for membrane functions.

To serve as a receptor for signaling molecules.

What is the primary function of proteins embedded within the cell membrane?

To facilitate the movement of large or charged molecules across the membrane

To store genetic information for the cell

To provide energy for cellular processes

To synthesize new phospholipids for membrane repair

How does water, a polar molecule, primarily move across the cell membrane?

Via facilitated diffusion through specialized protein channels called aquaporins

Through simple diffusion directly across the lipid bilayer

By active transport, requiring ATP

It cannot move across the cell membrane

WG Cell Membrane & Tonicity Lesson Slides: 5 Slides

19 questions

Show all answers

1.

SLIDE QUESTION

30 sec • Ungraded

2.

SLIDE QUESTION

30 sec • Ungraded

3.

MATCH QUESTION

1 min • 1 pt

Match the following

only allows certain things in and out

cell membrane

modification and packaging of proteins

nucleus

digestion of waste

Gogli body

genetic information

lysosome

protein synthesis

ribosomes

Label each solution as hypotonic, hypertonic or isotonic. Draw arrows to show which way the water will move.

7.

SLIDE QUESTION

30 sec • Ungraded

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WG Cell Membrane & Tonicity

19 questions

Match the following

Label each solution as hypotonic, hypertonic or isotonic. Draw arrows to show which way the water will move.

How long can humans typically survive without water?

What term describes cell membranes that allow certain particles to pass through but not others?

What is the purpose of adding shampoo during the DNA extraction process from a banana?

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