Question

The GTPase Dynamin is involved in which step of vesicular A) Binding of cargo molecules to cargo receptors B) Assembly of the Clathrin coat C) Pinching off the vesicle from the membrane D) Transport of vesicles along microtubules Which of the following events does not occur in the rough endoplasmic reticulum? A) Cleavage of the signal peptide by the signal peptidase B) Binding of chaperone proteins to misfolded or partially folded pathways C) Transfer of a pre formed oligosaccharide to a new polypeptide by oligosaccharyl transfera....... D) Degradation of misfolded proteins by the ubiquitin proteasome system E) Formation of vesicles destined for the Golgi apparatus Which of the following elements is not required for transport of a soluble protein into the lumen A) ER signal sequence B) Protein translocator C) Signal recognition particle receptor D) Stop transfer sequence Your friend works in a biotechnology company and has discovered a drug that blocks the ab exchange GDP for GTP. What is the most likely effect of this drug on the nuclear transport? A) Nuclear transport receptors would be unable to bind cargo. B) Nuclear transport receptors would be unable to enter the nucleus. C) Nuclear transport receptors would be unable to release would be unable to release their cargo in the nucleus. D) Nuclear transport receptors would interact irreversibly with the nuclear pore fibrils. The packing of into secretory vesicles occurs in discrete steps. Which one describes the correct the events listed in I-V below? I. GTPase dynamin pinches off the vesicle from membrane of origin II.Clathrin binds to adaptin III Clathrin coat falls off IV Cargo receptor binds cargo A) II, I, III, IV B)I, II, IV, III C) IV, I, III, II D) IV, I, III, II Signal sequence that direct proteins to the endoplasmic reticulum are ______? A) Added to proteins through post translational modification B) Encoded in the amino acid sequence C) Added to a protein by a protein translator D) Not removed and remain attached to the protein

Answer 1

DATE Ansuwer Option Pinching aff the vesicle iom the mewbrane is the corrcet answer Budded vesicles de tach from the plasma membrane wth the help sf GT fasc Dyain via menbxane seission. Dynamins asro ci at the neck of the budding vesicle and e thert cuting the neck and releasing th vesride fom the membrane cle