AP Biology Cell Membranes Tuff!

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•
Biology
•
11th Grade - University
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What happens to the membranes of hibernating animals during winter?
Back
Membranes toughen as more saturated fatty acids accumulate in them.
2.
FLASHCARD QUESTION
Front
What compounds in biological membranes form a barrier to the movement of hydrophilic materials?
Back
Lipids.
3.
FLASHCARD QUESTION
Front
What are biological membranes primarily composed of?
Back
Lipids.
4.
FLASHCARD QUESTION
Front
What occurs when a mouse cell and a human cell are fused?
Back
The membrane proteins of the two cells become uniformly distributed over the surface of the hybrid cell because many proteins can move around within the bilayer.
5.
FLASHCARD QUESTION
Front
Which type of membrane protein is most easily removed in a laboratory experiment?
Back
Peripheral membrane proteins.
6.
FLASHCARD QUESTION
Front
What is the role of lipids in biological membranes?
Back
Lipids form a hydrophobic barrier that prevents the movement of hydrophilic substances.
7.
FLASHCARD QUESTION
Front
What is the fluid mosaic model of cell membranes?
Back
The fluid mosaic model describes the structure of cell membranes as a mosaic of various proteins that float in or on the fluid lipid bilayer.
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