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Questions and Answers
What is the impact of unsaturated hydrocarbon tails on membrane fluidity?
What is the impact of unsaturated hydrocarbon tails on membrane fluidity?
- They prevent movement of proteins
- They make the membrane more solid
- They make the membrane more fluid (correct)
- They have no impact on membrane fluidity
What effect does the steroid cholesterol have on membrane fluidity at warm temperatures?
What effect does the steroid cholesterol have on membrane fluidity at warm temperatures?
- It restrains movement of phospholipids (correct)
- It solidifies the membrane
- It has no effect on membrane fluidity
- It increases lateral movement of phospholipids
How does temperature affect the fluidity of a membrane rich in unsaturated fatty acids?
How does temperature affect the fluidity of a membrane rich in unsaturated fatty acids?
- It has no effect on fluidity
- It becomes more solid as temperature decreases
- It solidifies at higher temperatures
- It remains fluid to a lower temperature (correct)
What is the role of the CCR5 protein in relation to HIV infection?
What is the role of the CCR5 protein in relation to HIV infection?
How do resistant individuals prevent HIV infection due to the alteration in the CCR5 gene?
How do resistant individuals prevent HIV infection due to the alteration in the CCR5 gene?
What is the importance of membrane carbohydrates in cell-cell recognition?
What is the importance of membrane carbohydrates in cell-cell recognition?
What type of proteins penetrate the hydrophobic core of the lipid bilayer?
What type of proteins penetrate the hydrophobic core of the lipid bilayer?
Which function do transmembrane proteins primarily serve in the membrane?
Which function do transmembrane proteins primarily serve in the membrane?
What is the main role of glycoproteins on the cell's surface?
What is the main role of glycoproteins on the cell's surface?
Why do fishes living in extreme cold have membranes with a high proportion of unsaturated hydrocarbon tails?
Why do fishes living in extreme cold have membranes with a high proportion of unsaturated hydrocarbon tails?
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