Most mitochondrial and chloroplast proteins are made in which part of the cell?

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Most mitochondrial and chloroplast proteins are made in which part of the cell?

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Proteins that lack a signal sequence remain as permanent residents of which part of a eukaryotic cell?

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Proteins are unfolded during their transport across the membranes of all but one of the following organelles. Which one?

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Which of the following is true?

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The ER signal sequence on a growing polypeptide chain is recognized by a signal recognition particle (SRP) in the cytosol. This interaction:

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Which type of protein binds to improperly folded or improperly assembled proteins in the ER, holding them there until proper folding occurs?

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In the unfolded protein response, the accumulation of misfolded proteins in the ER serves as a signal for the cell to do which of the following?

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Macromolecules, such as proteins, travel between components of the endomembrane system by...

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Select all of proteins below that are made on the membrane-bound ribosomes of the rough ER?

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What portion of a polypeptide being synthesized determines which type of ribosome, free or bound, will complete its synthesis?

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All of the following are types of protein processing that can occur in the endoplasmic reticulum EXCEPT...

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Integral membrane proteins are inserted in the correct orientation in the membrane with the assistance of what protein of the endoplasmic reticulum?

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The initial response of the cell to misfolded protein accumulation in the ER is _________. If that does not clear up the problem the cell will then initiate _________ and if that is not successful then the cell will initiate _______________.

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The process by which misfolded proteins in the ER are transported to the cytosol, labeled with ubiquitin and then degraded by proteosomes is called _______________.

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Translation is stopped in ____________.

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What is the purpose of chaperones?

Explanation / Answer

1. a. In the cytosol

Protein synthesis generally occurs in rough endoplastic reticulum, but most mitochondrial and chloroplast proteins are made outside the membrane that is in the cytoplasm, i.e. in the ribosomes that are not attched to endoplasmic reticulum.

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