6. The Membrane
Biological Membranes
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- Multiple Choice
The fluid mosaic model of the membrane proposed that membranes:
7073views144rank - Multiple ChoiceWhy are cell membranes composed primarily of hydrophobic molecules?3357views1rank
- Multiple ChoiceWhich of the following statements about the role of phospholipids in the structure and function of biological membranes is correct?2892views1rank
- Multiple ChoiceThe plasma membrane is referred to as a "fluid mosaic" structure. Which of the following statements about that model is true?3698views1rank
- Textbook Question
What is a fiber composite? How do cellular fiber composites resemble reinforced concrete?
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According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly
a. Spread in a continuous layer over the inner and outer surfaces of the membrane.
b. Confined to the hydrophobic interior of the membrane.
c. Embedded in a lipid bilayer.
d. Randomly oriented in the membrane, with no fixed inside-outside polarity.
3623views - Textbook Question
Which of the following factors would tend to increase membrane fluidity?
a. A greater proportion of unsaturated phospholipids
b. A greater proportion of saturated phospholipids
c. A lower temperature
d. A relatively high protein content in the membrane
3238views - Textbook Question
Which best describes the structure of a cell membrane?
a. Proteins between two bilayers of phospholipids
b. Proteins embedded in a bilayer of phospholipids
c. A bilayer of protein coating a layer of phospholipids
d. Cholesterol embedded in a bilayer of phospholipids
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