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Home work 4
1. Movement of lipids from one face of the bilayer to the other called……………………………….
2. Both proteins and lipids are free to move in the plane of the bilayer by…………………………..
3. Peripheral membrane proteins associated with the membrane through ……………………………
4. Lipid-anchored membrane proteins associated with the membrane by ………………………………
5. Different molecules transported through the cell membrane by three different way
a………………………………..b……………………..………….c……………………………………
6. Lipid bilayer for cell membrane has:
a) Amphipathic lipids
b) stabilize by hydrophobic interaction
c) Consist of two sheet
d) flexible and to be self-seal
e) All of these
7) Biological membrane contain three type of lipids:a……………………………b………………………..
c………………………………….
8) The function of cholesterol in the cell membrane is……………………………………………………….......
9) The class of protein associated with cell membrane are 1………………………………………………
2………………………………………….3……………………………………………………………………
10) Which of the following statements about Potassium channels is true?
A) Passive transport of potassium ion.
B) Na+ is too smaller to interact with the selectivity filter than K+.
C) K+ transport by desolvation and resolvation process.
D) All of these
11. The Na+ -K+ ATPase is an example of……………………………………………………………
12. LDL-Cholesterol is macromolecules that are taken into cells by a process called…………………………..
………………………………………………….
13. Drug receptor theories divide to: a…………………………………b……………………………………..
14. The structure of Trimetric Gs protein that activated adenylyl cyclase …………...….………………….
15. The effector enzyme of adenylyl cyclase signaling pathway is………………………………..…………..
16. The second messenger of adenylyl cyclaseis signaling pathway ..…………………………………….
17. Caffeine and theophylline are stimulant due to:…………………………………………………………..
…………………………………………………………………………………………………………………….
18. Which toxin inhibits the function of Gi protein?.......................................................................................
19. The effector enzyme of Inositol-Phospholipid Signaling Pathway is……………………………………
20. The second messenger of Inositol-Phospholipid Signaling Pathway is………………………………….
21. The effector enzyme of insulin tyrosine kinase is………………………………………………………..…
22. The second messenger of insulin tyrosine kinase is………………………………………………………
23. Tyrosine kinase receptors are characterized by their enzymatic:
A) Degrading of GTP to GDP
B) Allowing ions to enter the cell
C) Activating protein kinase C
D) Phosphorylation of tyrosine
24. Na+ channels is an example of ……………………………………………..
25. Lipophilic or hydrophobic ligands (steroid hormone) (intracellular legand) enter the cell by………
……………………………………………………………………………….
26. Example of intracellular receptor is a…………………………………b……………………………….
27. Auto-phosphorylation, that means………………………………………………………………………..
Read Steps of:
1. of the adenylyl cyclase signaling pathway
2. Inositol-Phospholipid Signaling Pathway
3. insulin tyrosine kinase
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