Which of the Following Is a Characteristic of Protein Translocation

Multiple Choice

Which of the following is a characteristic of protein translocation systems?

A) Translocons passively move proteins across the membrane.
B) Proteins to be translocated are made as preproteins containing distal blocks of amino acid sequences that act as sorting signals.
C) Membranes involved in translocation have specific protein receptors exposed on their cytosolic faces.
D) Pre-proteins are maintained in a tightly folded,translocation-competent conformation through interaction with molecular chaperones.