1.The mRNA for signal peptidase is translated in the ___________. The resulting polypeptide contains__________ as part of its primary structure.
a. Nucleus, KDEL
b. Rough Endoplasmic Reticulum, KDEL
c. Nucleolus, KDEL
d. Rough Endoplasmic Reticulum, KKKK-----KK
e. Nucleolus, KKKK------KK
2. Assume that you have two identical samples of lipids, but that one of them has been made radioactive with C 14 , and the other with H3 . You now coat the surface of one glass slide with the first, and coat a second slide with the other. Then you press the two slides together (carefully!), so that the lipid coated surfaces touch. You now freeze the slide sandwich, and while it is frozen, separate the two slides and measure the radioactivity of each. Which of the following results would you expect?
a. The slide that started with C14 now includes all of the H3 as well.
b. The slide that started with H3 now includes all of the C14 as well.
c. Each slide will have some C14 and some H3 .
d. The slide that had the C14 retains the C14 and the other retains the H3
. e. The labels have switched sides
3.The mRNA for ribosomal proteins is translated in the ___________, The resulting polypeptides contain__________ as part of their primary structure.
a. Nucleus, KDEL
b. Cytoplasm, KDEL
c. Nucleolus, KDEL
d. Cytoplasm, KKKK-----KK
e. Nucleolus, KKKK------KK
Please find the answers below:
Answer 1: Choice b (the rough endoplasmic reticulum represents the site for translation of proteins including signal peptidase and KDEL represents the target leader sequence for it)
Answer 2: Choice d (Although lipids are fluid structure but they do not perform exchange of atoms such as structural carbon and hydrogen. The fluidity of phospholipid chain is maintained in the plasma membrane but exchange of atoms does not take place)
Answer 3: Choice c (Nucleolus represents the site of translation for ribosomal proteins and the presence of sequence KDEL in the structural domain reperesents the signature sequence for it)
1.The mRNA for signal peptidase is translated in the ___________. The resulting polypeptide contains__________ as part...
Hi! I need help answering this questions. Please provide an explanation for the answer as well, thanks: Assume that you have two identical samples of lipids, but that one of them has been made radioactive with C14, and the other with H3. You now coat the surface of one glass slide with the first, and coat a second slide with the other. Then you press the two slides together (carefully!), so that the lipid coated surfaces touch. You now freeze...