Which of the following transport involves translocation of the protein from cytosol to the nucleus?
A.
Transmembrane transport
B.
Vesicular transport
C.
Non-gated transport
D.
Gated transport
Answer: Option D
Explanation:
Translocation of protein from cytosol to nucleus takes place by nuclear pore complex which is a gated channel. Nuclear pore complex works as a selective gate which allows transport of specific macromolecules.
Secreted proteins pass through ER-Golgi system, so, these are synthesized on ER membrane-bound ribosomes while proteins that are imported into organelles like mitochondria, nucleus, and chloroplast are synthesized on membrane free ribosomes.
Name the antibiotic which inhibits protein synthesis in eukaryotes?
A.
Penicillin
B.
Cycloheximide
C.
Cinhonine
D.
Chlorophenicol
Answer: Option B
Explanation:
Cyclohexamide produced by the Streptomyces griseus, and interfere with the translocation step of protein synthesis and block translational elongation in eukaryotes.