#Question id: 10533
#Unit 2. Cellular Organization
Following statements are regarding to the fluidity of a bilayer.
A. A lipid bilayer cools below a characteristic transition temperature, it undergoes a sort of phase change in which it becomes a liquid; that is, it loses its fluidity.
B. Above the transition temperature, the highly mobile lipids are in a state known as a liquid crystal.
C. The bilayer is thicker in the gel state than in the liquid crystal state due to the stiffening of the hydrocarbon tails at lower temperatures.
D. The transition temperature of a bilayer decreases with the chain length and the degree of saturation of its component fatty acid residues for the same reasons that the melting points of fatty acids increase with these quantities.
Which of the following combination is correct?
#Question id: 10534
#Unit 2. Cellular Organization
This experiment (shown in figure ) was performed at 37degree C. If the experiment were carried out at 10 degree C, what effect would you expect on the rate of diffusion? Why?
#Question id: 11164
#Unit 2. Cellular Organization
#Question id: 11165
#Unit 2. Cellular Organization
Membrane lipids in tissue samples obtained from different parts of a reindeer’s leg have different fatty acid compositions. Membrane lipids from tissue near the hooves contain a larger proportion of unsaturated fatty acids than those from tissue in the upper leg. What is the significance of this observation?
#Question id: 11166
#Unit 2. Cellular Organization
Which of the following fatty acids are linked to membrane proteins?
#Question id: 11167
#Unit 2. Cellular Organization
The core structure of the GPI group consists of :