d Practice February 7- Internet Explorer //docs.google.com/forms/d/e/1FAlpQlScpl
ID: 191551 • Letter: D
Question
d Practice February 7- Internet Explorer //docs.google.com/forms/d/e/1FAlpQlScplH1hkeiEOrqRyOoZgEbTYb765AfylHQe6zqQw15ww3z6Yw/viewform 3. In comparing the inner mitochondrial membrane and the outer mitochondrial membrane in rat, what are two interesting observations? Your answer 4. Why is there no cholesterol found in mung bean, cauliflower, and E.coli membranes? Your answer 5. Define coiled-coil (in regards to protein structure). Your answer 6. What is the location of integral membrane proteins in the cell? Your answer 7. What is the location of lipid-anchored proteins in the cell? Your answer 8. What is the location of peripheral membrane proteins in the cell?Explanation / Answer
5. Ans
In protein molecules, a coiled coil is a structural motif in which 2-7 alpha helices are coiled arrange in a repeated pattern like strands of a rope. They play role in different biological functions like regulation of gene expression,
6.Ans-
The location of integral membrane proteins in the cell is the lipid bilayer and they cannot easily separate from the membrane without using detergents, nonpolar solvents, or sometimes denaturing agents.
7. Ans-
The location of lipid-anchored proteins in the cell is the surface of the cell membrane where they covalently attached to lipids that attach to the cell membrane and help in protein interaction.
8. Ans-
The location of peripheral membrane proteins in the cell is the peripheral regions of the lipid bilayer of membranes where they bind to the integral membrane proteins or penetrate the peripheral regions of the phospholipid bilayer.
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