Answer_keys_Ch11-12

Answer_keys_Ch11-12 - Answers to practice questions Chapter...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Answers to practice questions Chapter 11. 1. e 2. c 3. a 4. proteins, amphipathic, lipid bilayer, fatty acid tails, hydrophilic head groups, phospholipids, sugars 5. d (but in the ER membrane, redistribution of phospholipids to the bilayer is carried out by a non-specific flippase, scramblase. The asymmetry of the bilayer is maintained by specific redistribution by flippases, in general.) 6. c 7. a 8. 3 and 6 9. transmembrane, hydrophobic, amphipathic, covalently, peripheral 10. e 11. a (You do not have to remember one-letter abbreviations for the 20 amino acids) 12. a 13. b, d, e 14. e 15. 1): d, 2): f 16. c 17. Tethered to the cell cortex, tethered to extracellular matrix molecules, tethered to molecules in another cell, diffusion barrier (Figure 11-33) 18. c 19. a 20. d 21. b 22. b 23. A: true, B: false (phosphatidylcholine is the most abundant phospholipid.) C: true, D: false (formation of lipid bilayer is favorable in water.) 24. A: SDS is a strong ionic detergent. SDS extracts proteins out from the membrane and completely unfolds them. It is impossible to do functional study of the denatured proteins. B: Triton X-100 is a mild detergent having a polar but uncharged portion. Triton X-100 forms a shell around the hydrophobic region of the protein without denaturing. This allows functional characterization of the protein because the protein is in a new, synthetic membrane bilayer. 25.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/21/2011 for the course PCB 3134 taught by Professor Multiple during the Fall '08 term at University of Florida.

Page1 / 3

Answer_keys_Ch11-12 - Answers to practice questions Chapter...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online