题目内容
（请给出正确答案）
[主观题]
Glycosylation, a post-translational modification to proteins, occurs in the
A、ER
B、proteasome.
C、mitochondria
D、none of the above
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发布时间：2022-01-07
题目内容
（请给出正确答案）
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第2题
Prince Edward Island joined the Canadian federation because of__________debt.
A、ship
B、truck
C、railway
D、Airplane
第3题
Protein sequences for targeting to mitochondria is located at
A、the C-terminus of the precursor protein.
B、amino acid position 173 in most mitochondrial proteins.
C、the N-terminus of the precursor protein.
D、the interior of the precursor protein.
第4题
Mitochondrial signal peptides are amphipathic α helical structures with positively charged amino acid one side and negatively charged amino on the other side.
第5题
In mammalian cells the import of proteins into the ER begins before the polypeptide chain is completely synthesized-that is ,it occurs co-translationally.
第6题
The fate of proteins synthesized in the cytosol depends on their amino acid sequence, which can contain ___________ that direct their delivery to locations outside the cytosol.
第7题
The signal peptide is guided to the membrane of the ER by at least two components:a _________ ,which binds to the signal peptide in the cytosol, and the _____________,which is located in the ER membrane .
第8题
Vesicle budding recruits proteins that are needed for subsequent
A、invagination of the vesicle into the ER lumen
B、selective vesicle targeting and fusion
C、shedding of integral membrane proteins into the cytosol
D、assembly of chromosome folding machinery
第9题
The presence of clathrin mediates vesicular transport
A、from ER to cis-Golgi
B、trans-Golgi to endosome.
C、nuclear membrane to endosome.
D、plasma membrane to trans-Golgi.
