Cell Structure and Function MCQ Quiz: GKFix - Bridge of Knowledge - Page 272

Question 1356

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The primary reason for the phospholipid bilayer's stability in an aqueous environment is:

Presence of cholesterol
High concentration of ions
Amphipathic nature of phospholipids
Strong protein interactions

Question 1357

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Which statement accurately describes the fluid mosaic model?

It shows the membrane as a rigid structure
It shows the membrane as a solid sheet
It shows the membrane as a dynamic and flexible structure
It shows the membrane as immobile

Question 1358

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Which of the following is a characteristic of peripheral proteins?

They span the entire membrane
They are covalently bonded to lipids
They are loosely attached to the membrane surface
They are permanently embedded

Question 1359

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Integral membrane proteins are sometimes referred to as:

Surface proteins
Floating proteins
Cytoplasmic proteins
Transmembrane proteins

Question 1360

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Which part of the phospholipid is hydrophobic?

Phosphate group
Glycerol backbone
Sugar molecule
Fatty acid chains