35 Questions
What is the primary function of the cis face of the Golgi apparatus?
Receiving newly synthesized proteins from the RER
Which protein is involved in the transport of Golgi vesicles from the ER to the Golgi?
COP 2
What is the purpose of the saccules in the trans face of the Golgi apparatus?
Accumulating larger saccules for protein storage
What is the primary function of the mitochondria in the cell?
Energy formation through ATP production
Which of the following organelles is NOT involved in protein synthesis?
Mitochondria
What is the result of the interaction between the RER and the Golgi apparatus?
Modification of proteins through post-translational modifications
What is the structural similarity among membranous organelles?
Membrane composition
Which of the following is NOT a function of vesicles in the cell?
Energy production
What is the primary function of Rough Endoplasmic Reticulum in terms of protein synthesis?
To glycosylate proteins not destined for the cytosol
What is the role of the Signal Recognition Particle (SRP) in protein synthesis?
To recognize the initial signal peptide and direct it to the RER
What is the site of phospholipid synthesis in a cell?
Smooth Endoplasmic Reticulum
What is the result of the interaction between the ribosomal subunits and the mRNA during protein synthesis?
The movement of the ribosome to the RER
What is the purpose of the cisterna in the Endoplasmic Reticulum?
To enclose a space for protein modification
What is the role of the Golgi Apparatus in cellular transport?
To package and transport proteins to the cell membrane
What is the function of the vesicles formed from the Golgi Apparatus?
To transport proteins to the cell membrane for exocytosis
What is the result of the post-translational modification of proteins in the RER?
The modification of proteins through glycosylation
Where does the receptor for SRP-fi 2 reside?
On the membrane of the RER
What is the main function of the SER?
Phospholipid and steroid synthesis
How do phospholipids transfer to other membranous structures?
Through vesicle transport or phospholipid transfer proteins
What is the function of the Golgi apparatus?
Post-translational modifications
Where are proteins stored before exocytosis?
In the pancreas
What is the function of signal peptidase?
To remove the SRP
What is the function of protein P450 in liver cells?
All of the above
What is the function of the RER?
Protein synthesis and modification
What is the function of the porin proteins in the outer mitochondrial membrane?
To transfer small molecules to the intermembrane space
What is the main function of the mitochondrial matrix?
To generate energy for the cell
What is unique about the phospholipids found in the mitochondrial inner membrane?
They are highly impermeable to ions
What is the function of the thermogenin protein in the mitochondrial matrix?
To regulate body temperature
What is the main function of the cisternae in the mitochondrial inner membrane?
To increase the surface area for ATP synthesis
What is the function of the ATP synthase complexes in the mitochondrial inner membrane?
To generate energy for the cell
What is the function of the multimeric protein complexes in the mitochondrial inner membrane?
To generate energy for the cell
Where are most mitochondrial proteins synthesized?
In the cytoplasm
What is the function of the mitochondrial outer membrane?
To transfer molecules to the intermembrane space
What is the function of the intermembrane space?
To store small molecules for transfer to the mitochondrial matrix
What is unique about the mitochondrial DNA compared to nuclear DNA?
It is circular in shape
Learn about the structure and function of the Golgi apparatus, including its role in protein synthesis and transport, and its appearance in the cell. Discover how it works with the RER and cytosol to process and transport proteins.
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