9. Most proteins destined to enter the endoplasmic reticulum a are transported across the membrane after their synthesis

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9 Most Proteins Destined To Enter The Endoplasmic Reticulum A Are Transported Across The Membrane After Their Synthesis 1 (64.13 KiB) Viewed 40 times

9. Most proteins destined to enter the endoplasmic reticulum a are transported across the membrane after their synthesis is complete. b. are completely translated on free ribosomes in the cytosol. c. begin to cross the membrane while still being synthesized. d. remain within the endoplasmic reticulum. 10. What binds to a growing polypeptide chain in the cytosol to direct it to the ER? A.signal-recognition particle B. protein translocator C. mRNA D. SRP receptor E.active site of signal peptidase 11. What transport mechanism is used to direct proteins to the outside of the cell? a protein synthesis outside the cell b. protein synthesis on the rough ER c. a specific protein translocator on the plasma membrane d. the capture of the protein in a transport vesicle that is heading to the plasma membrane 12. How do you get a membrane protein with multiple transmembrane domains? a. a translocator recognizes multiple hydrophobic start and stop transfer sequences in the protein b. a translocatay recognizes multiple bydrophilic start and stop transfer sequences in the protein c. individual ploteins are inserted in membrane once and then fuse together d the signal recognition particle dictates when to translocate parts of the protein 13. What class of proteins help fix misfolded proteins? Descramboloses b. Glycotransferases c. Peptidases d. Chaperones e Translocators 14. Molecules to be packaged into vesicles for transport are selected by a clathrio. b. adaptins. c. dynamin. d. SNARES e. kinases 15. Which of the following protein families are NOT involved in directing transport vesicles to the target membrane? & SNARES b. Rabs c. tethering proteins d. adaptins. 16. In transport vesicle formation, what purpose(s) does the protein cont serve? 2 it shapes the vesicle and captures specific molecules b.it interacts with a specific target membrane to direct proteins to specific locations c. it prevents destruction of membrane proteins d. it promotes fusion of the vesicle with other membranes c. all of the above