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Cell Physiology Quiz

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Questions and Answers

What is the main function of the cell membrane?

To store genetic information

To synthesize proteins for the cell

To provide structural support to the cell

To separate the intracellular fluid from the extracellular fluid (correct)

What is the composition of the cell membrane lipids?

Nucleic acids and phospholipids

Mainly cholesterol with a small amount of phospholipids

Mainly proteins and carbohydrates

Lipid Bi-Layers with cholesterol molecules floating (correct)

What are the characteristics of the tails of phospholipids?

Are hydrophilic and contain phosphate

Contain phosphate and are water soluble

Contain fatty acids and are water insoluble (correct)

Are hydrophobic and contain fatty acids

What is the main feature of facilitated diffusion?

<p>Requires specific carrier proteins</p> Signup and view all the answers

What is the process that allows the cell to take in large molecules and particles?

<p>Endocytosis</p> Signup and view all the answers

Study Notes

Cell Membrane

The main function of the cell membrane is to regulate what enters and leaves the cell.

Composition of Cell Membrane Lipids

The cell membrane is composed of phospholipids, which are amphipathic molecules with hydrophilic (water-loving) heads and hydrophobic (water-fearing) tails.

Characteristics of Phospholipid Tails

The tails of phospholipids are non-polar and hydrophobic, allowing them to interact with each other and form a barrier to water and ions.

Facilitated Diffusion

Facilitated diffusion is a type of passive transport that uses transport proteins to move molecules down their concentration gradient.

Cellular Uptake of Large Molecules and Particles

Phagocytosis is the process that allows the cell to take in large molecules and particles by engulfing them with the cell membrane and forming a vesicle.

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Description

Test your knowledge of cell physiology with this quiz by Dr. Nageeb. Topics covered include cell membrane, simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis, and multiple choice questions. Perfect for students studying cell physiology.