16 Questions
Where are ribosomes responsible for protein synthesis found?
Both in the cytoplasm and the rough endoplasmic reticulum (ER)
What is the main function of the smooth endoplasmic reticulum (ER)?
Synthesis of lipids, including phospholipids and cholesterol
Which subunit of ribosomes contains the ribosomal RNA (rRNA)?
Large subunit
What is the role of the ribosomal proteins in protein synthesis?
Binding to the mRNA and ensuring that the correct amino acids are added to the growing polypeptide chain
Where are signal sequences located in a protein?
At the N-terminus
What is responsible for the synthesis of lipids, including phospholipids and cholesterol?
Smooth ER
What is the role of the Golgi apparatus in protein processing?
Modification, sorting, and export of proteins
What is the function of the translocon in the ER?
Insertion of proteins into the ER membrane
What do lysosomes contain?
Enzymes that break down cellular debris and foreign material
What is the main component of cell membranes?
Phospholipids
What is the role of the signal recognition particle (SRP) in protein targeting?
Recognizing the signal sequence and transporting the protein to the ER membrane
What is the process of adding carbohydrates to proteins called?
Protein glycosylation
What is the function of transport vesicles?
Carrying proteins and lipids to their destinations in the cell
What is the role of the quality control system in the ER?
Ensuring that only properly folded proteins are allowed to leave the ER
What directs proteins to the correct transport vesicles in the Golgi apparatus?
Sorting receptors
What is responsible for the modification, sorting, and export of proteins?
Golgi apparatus
Test your knowledge of protein sorting and transport with this quiz. Explore the process of protein synthesis, the role of ribosomes, and the complex network of organelles and transport vesicles involved in transporting proteins to their correct locations within the cell.
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