Would you expect the properties of the luminal side of Golgi membranes to be more similar to the extracellular or cytosolic side of the plasma membrane? Why?
Golgi membranes are the organelles responsible for the post processing of protiens and other macro molecules. Since it is a membrane it contanes two sides the outer or cytosolic face and inner or luminal face. Generaly cytosolic is reductive in nature meaning that there are molecules which are ready to supply electrons and the luminal region is generally oxidative.
The luminal side of the golgi membrane will be similar to that of the extracellular or expolasmic phase since the membranes follow a rule called "conservation of membrane topology" which states the the bound surface/ the exposed surface should always face the same environment.
in the figure the skyblue represent the exoplasmic face and darkblue the endoplasmic/cytosolic of the plasma membrane. the golgi external surface is exposed to the cytosolic part of plasma membrane so according to the law to conserve the topology while bud formation or fusion the, golgi external part should face the cytosolic part of plasma membrane. hence the luminal face should face the external surface that is the exoplasmic phase of plasma membrane.
Would you expect the properties of the luminal side of Golgi membranes to be more similar...
1. Which type of cells below is not known for its extensively developed SER? A. skin cells B. kidney tubule cells C. skeletal muscle cells D. steroid-producing endocrine cells E. both skeletal muscle cells and kidney tubule cells 2. What determines the function of a cell's smooth endoplasmic reticulum? A. its lipid content B. its polynucleotide content C. its carbohydrate content D. its protein content E. its age 3. What is responsible for recognizing lysosomal enzymes and localizing them to...
Identify Elements with Similar Chemical Properties Which element would you expect to show similar chemical properties to Na, Cl, P and O.
Determine whether the following classes of proteins are synthesized on free ribosomes or ER docked ribosomes. a) Single-pass membrane proteins b) Multi-pass membrane proteins c) Peripheral membrane proteins (on the cytosolic side) d) Peripheral membrane proteins (on the luminal side) e) Peripheral membrane proteins (on the extracellular side) f) Fatty acid-anchored membrane proteins g) GPI- anchored membrane proteins - Where would a protein likely go if you were to remove a characteristic hydrophobic membrane spanning domain?
If you knocked out (deleted) the SH2 domain of IRS-1, where would you expect to find most of the cellular ERK? A. In the cytoplasm B. evenly distributed between cytoplasm and nucleus C. In the extracellular space D. In the nucleus E. Embedded in the plasma membrane
You are researching organelle function and you expose cells to a drug that disrupts transport from the ER to the Golgi apparatus. What other organelles and membranes would be affected? Pick one answer below and EXPLAIN YOU ANSWER FOR FULL CREDIT. A. lysosomes, vesicles, plasma membrane B. lysosomes, mitochondira, plasma membrane C. vacuoles, mitochondria, plasma membrane D. lysosomes, vacuoles, peroxisomes E. all intracellular organelles and membranes
3b and 4 please
Exercise 9-55 3. You wish to determine the distribution of phospholipids in the plasma membrane. You use right-side out and inside out red blood cells. You treat the cells with SITS, a fluorescent dye that reacts with primary amino groups and two different phospholipases. The results are sum- marized below (+reacted did not react). Sphingolipase Sea snake venom SITS Right side Inside out Right side Inside out Right side Inside out out out PPhosphatidycholine P Phosphatidyl-ethanolamine...
Membrane lipids have fatty acid tails and, like triacylglycerols, their properties are governed by the properties of these tails. Based on what we saw with dietary lipids, which membrane would have more fluid characteristics – the one with more saturated fatty acids or the one with more unsaturated fatty acids? Explain your reasoning. Look at the structure of cholesterol. Cholesterol is a necessary component of biological membranes. What do you think cholesterol would do to the structure of a membrane...
Please answer as many as you can. Will
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Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
0. Group the following elements in pairs that you would expect to show similar physical and chemical properties: F, Li, Bi, As, I, and Cs.
If the pinsulin receptor, a, example of an integral membrane protein, is cotranslationally inserted into the ER membrane with the N-terminus on the cytosolic side of the membrane and the C-terminus in the lumen of the ER, which side of the protein would you expect to bind to the ligand, pinsulin, when the protein is found on the cell surface? A. N-terminal end of the protein will bind pinsulin B. Neither will bind to a ligand because both ends of...