BIOCHEMISTRY QUIZ PRACTICE PRLOBEM (MEMEBRANE
BIOCHEMISTRY)
1. a. What is membrane dynamics?
b. Describe asymmetry in terms of the main components of bio-membranes.
c. List 4 experimental techniques used to study membrane dynamics and symmetry.
2. A protein is found to extend all the way through the membrane of a cell. Describe
this protein in terms of the location of particular types of amino acid side chains in its
structure and its ability to move within the membrane.
3. Use a labeled diagram to show clearly the different modes of movement of
compounds and ions across membranes.
4. Summarize the similarities and differences between active and passive transport.
5. The bacterium E. coli can grow at 20°C or at 40°C. At which growth temperature
would you expect the membrane phospholipids to have a higher ratio of saturated to
unsaturated fatty acids, and why?
6. Give a detailed accow1t of the structure and function of GLUT1 - the glucose
transporter found in erythrocytes.
7. What are ABC transporters?
8. Compare and contrast symport and antiport. Which term best describes the transport
system mediated by the Na+K+ ATPase?
BIOCHEMISTRY)
1. a. What is membrane dynamics?
b. Describe asymmetry in terms of the main components of bio-membranes.
c. List 4 experimental techniques used to study membrane dynamics and symmetry.
2. A protein is found to extend all the way through the membrane of a cell. Describe
this protein in terms of the location of particular types of amino acid side chains in its
structure and its ability to move within the membrane.
3. Use a labeled diagram to show clearly the different modes of movement of
compounds and ions across membranes.
4. Summarize the similarities and differences between active and passive transport.
5. The bacterium E. coli can grow at 20°C or at 40°C. At which growth temperature
would you expect the membrane phospholipids to have a higher ratio of saturated to
unsaturated fatty acids, and why?
6. Give a detailed accow1t of the structure and function of GLUT1 - the glucose
transporter found in erythrocytes.
7. What are ABC transporters?
8. Compare and contrast symport and antiport. Which term best describes the transport
system mediated by the Na+K+ ATPase?
