Protein transport across membranes in the eukaryotic cell can take all of the following forms except: transport through a narrow transmembrane channel transport through the octagonal nuclear pores transport through fusion of vesicles with target organelles transport from the nucleoid region into the cytosol none of the above

Protein transport across membranes in the eukaryotic cell can take all of the following forms except: transport through a narrow transmembrane channel transport through the octagonal nuclear pores transport through fusion of vesicles with target organelles transport from the nucleoid region into the cytosol none of the above

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 11RE

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Similar questions

With regard to cytoskeletal structure and function, describe the molecules involved in the transport of vesicles from the endoplasmic reticulum to the plasma membrane
The figure above shows the organization of a protein that will eventually reside in the plasma membrane. The boxes labeled 1 and 2 represent membrane-spanning sequences and the arrow represents a site of action of signal peptidase. Which of the following statements must be TRUE about this protein? O a) Most of this protein will project from the cytosolic side of the membrane. O b) The mature version of this protein will span the membrane twice. c) This is a multi-pass membrane protein. O d) The mature version of this protein will span the membrane once.
Ribosomes in the cytoplasm (cytosol) capture mRNA that can be translated into an enzyme (in this case a protease) to the lysosome. a) Describe what happens from the time the enzyme (protease) begins to form in the cytoplasm until it end up in the lysosome and explain how the enzyme is transported to the lysosome, Explain in terms of the clathrin and thethering proteins
A peripheral protein, which is not integral to the cell membrane, is also called: a multi-pass transmembrane protein (like band 3.0 protein) a single-pass transmembrane protein (like glycophorin A) a monolayer-associated protein (like the COX-1 protein) a protein-attached protein (like cytochrome c) a lipid-linked protein (like the Ras protein)
After pinocytic vesicles fuse with early endosomes, one possible fate of both cargo receptors and their cargo could be translocation to a new plasma membrane location, followed by exocytosis of the cargo molecule, which commonly occurs in human gut epithelial cells carrying which cargo? the human immunodeficiency virus (HIV) the glucose molecule the low density lipoprotein (LDL) the influenza virus the cholesterol molecule
n addition to transmembrane a-helices another type of polypeptide structure of Integral membrane proteins that extends through the lipid bilayer is: segments with mainly charged amino acids B barrel segments with mainly polar amino acids single B-strand irregular secondary structure d)
Ribosomes in the cytoplasm capture mRNA that can be translated into an enzyme for the lysosome. a) Explain what happens from the time the enzyme begins to form in the cytoplasm until it ends up in the lysosome and also explains how the enzyme is transported to the lysosome?
Using the the enzyme acid hydrolase in the lysosome: What is the final destination in which the protein will function? Which features will the protein receive during its manufacture? What is the primary structure (general)? Where is the primary structure made? Where are the secondary and tertiary structures made? Will the protein travel through any organelles during its manufacture? Which ones? What would be the overall result if some part of the manufacture process went wrong, such that the protein ended up as nonfunctional?
Integral membrane proteins are anchored in lipid bilayers. Which of the following groups of amino acid residues would likely be found in the portion that crosses the lipid bilayer? Nonpolar Polar Acidic Charged
Describe, in detail, the steps involved in the synthesis of an integral membrane protein located in the plasma membrane. Begin with the ribosome, end with the plasma membrane.
The following are steps that occur when a protein is targeted for synthesis on the endoplasmic reticulum (ER). Which of the following indicates the correct sequence for the signal mechanism that targets proteins for the ER? The SRP leaves and polypeptide synthesis resumes, with simultaneous translocation across the membrane. Polypeptide synthesis begins on a free ribosome in the cytosol. An SRP binds to the signal peptide, halting synthesis momentarily. The rest of the completed polypeptide leaves the ribosome and folds into its final conformation. The SRP binds to a receptor protein in the ER membrane that is part of a protein complex that forms a pore. The signal peptide is cleaved by an enzyme in the receptor protein complex. A. 2, 3, 5, 1, 6, 4 B. 2 ,3, 5, 6, 1, 4 C. 3, 1, 6, 5, 2, 4 D. 3, 2, 1, 5, 6, 4
IN the figure for D: The organization of a protein that normally resides in the plasma membrane in shown in the figure below. The boxes labeled 1,2 3 and 4 represent membrane-spanning sequences and the arrow represents a site of action of signal peptidase. Given this diagram, which of the following statements must be true? (C) (D) oplasmic Reticulum The N-terminus of this protein is in the ER lumen The mature version of this protein will span the membrane twice, with both the N- and C-terminus in the cytoplasm. Two of the answers are correct The C-terminus of this protein is in the ER lumen