Which of the following statements describes a typical feature of protein import

Question

Which of the following statements describes a typical feature of protein import into the mitochondrium?

A. It occurs in a fully folded state

B. It uses ATP hydrolysis as a driving force

c. It involves a chaperone that keeps the protein unfolded in the cytosol

D. The whole process (from signal sequence recognition to signal peptide cleavage) does not require any energy

E. It involves the diffusion of proteins through porins and then active import into the mito matrix through an aqueous translocation channel

Explanation / Answer

Which of the following statements describes a typical feature of protein import into the mitochondrium?

B. It uses ATP hydrolysis as a driving force

because : mitochondria and chloroplasts are double-membrane-enclosed organelles. They specialize in the synthesis of ATP, using energy derived from electron transport and oxidative phosphorylation in mitochondria and from photosynthesis in chloroplasts

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