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Cells 4
Protein Transport
Question | Answer |
---|---|
Nuclear pores function as very selective and tightly controlled gates that actively transport macromolecules such as proteins but allow free movement of smaller molecules such as ions | True |
The protein sorting and delivery pathway involves the following organelles/compartments in order | RER, transport vesicle, Golgi, final destination |
Soluble proteins made on the rough endoplasmic reticulum (RER) are released into the ER lumen | True |
Which of the following is NOT a mechanism for bringing material into a cell | Exocytosis |
Formation of vesicles (vesicle budding) at the plasma membrane is driven by special coat protein complexes called: | Clathrins |
The vesicular transport provides routes of communication between the interior of the cell and its surroundings | True |
For some organelles, including mitochondria, chloroplasts, peroxisomes and the interior of the nucleus, proteins are delivered directly from the cytosol | True |
Process of endocytosis involves a formation of plasma membrane invagination and subsequent formation of a transport vesicle | True |
Golgi complex (apparatus) is responsible for packaging and sorting proteins and lipids destined for secretion | True |
During translocation of a membrane bound protein its arrangement in the lipid bilayer is enforced by | Start and Stop signals located on the polypeptide chain |