Podcast
Questions and Answers
What is the function of the endoplasmic reticulum (ER) in a eucaryotic cell?
What is the function of the endoplasmic reticulum (ER) in a eucaryotic cell?
- Energy production
- Protein biosynthesis (correct)
- DNA replication
- Cell division
Which organelles receive proteins initially delivered to the endoplasmic reticulum (ER) lumen?
Which organelles receive proteins initially delivered to the endoplasmic reticulum (ER) lumen?
- Golgi apparatus and lysosomes (correct)
- Vacuoles and chloroplasts
- Mitochondria and peroxisomes
- Nucleus and ribosomes
What marks proteins for translocation into the lumen of the endoplasmic reticulum (ER)?
What marks proteins for translocation into the lumen of the endoplasmic reticulum (ER)?
- Messenger RNA (mRNA)
- Ribosomal RNA
- Signal sequence (SS) (correct)
- Transfer RNA (tRNA)
What is the internal space enclosed by the endoplasmic reticulum (ER) membrane called?
What is the internal space enclosed by the endoplasmic reticulum (ER) membrane called?
Which cellular organelles benefit from the ER membrane contribution?
Which cellular organelles benefit from the ER membrane contribution?
What happens to the signal sequence (SS) of a protein after it reaches its final destination?
What happens to the signal sequence (SS) of a protein after it reaches its final destination?
What is the purpose of the signal peptidase within the ER lumen?
What is the purpose of the signal peptidase within the ER lumen?
What role does the signal recognition particle (SRP) play in the protein targeting pathway?
What role does the signal recognition particle (SRP) play in the protein targeting pathway?
Where does N-linked glycosylation predominantly take place?
Where does N-linked glycosylation predominantly take place?
What happens to misfolded or incompletely assembled proteins in the ER?
What happens to misfolded or incompletely assembled proteins in the ER?
What is the role of the peptide translocation complex in the ER?
What is the role of the peptide translocation complex in the ER?
What is the function of dolichol phosphate in protein processing?
What is the function of dolichol phosphate in protein processing?
