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1. Which of the following proteins are unlikely the precursors of the inner mitochondrial protein? A.proteins...

1. Which of the following proteins are unlikely the precursors of the inner mitochondrial protein?

A.proteins initially located in the lumen of the endoplasmic reticulum  

B.proteins synthesized in the cytosol  

C.proteins synthesized in the mitochondrial matrix  

D.proteins synthesized in the cytosol and are first transported into the mitochondrial matrix

2. Which of the following proteins whose syntheses are completed in the rough ER?

A. pyruvate kinase located in the cytosol

B. enzymes located in the lysosomes

C. histone H3

D. mitochondria matrix proteins

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Answer #1

1. A large number of mitochondrial protein are synthesized in the cytoplasm as the precursors proteins and are then transported into the mitochondrial matrix. Answer - D.

2. Mitochondrial matrix proteins are synthesized completed in the rough endoplasmic reticulum. These proteins are mainly synthesized in the ribosomes which are present in the rough ER. Answer - D.

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