Podcast
Questions and Answers
Which statement best describes the endomembrane system?
Which statement best describes the endomembrane system?
- It is found only in prokaryotic cells.
- It is present only in eukaryotic cells and is made up of compartments like the endoplasmic reticulum and Golgi apparatus. (correct)
- It consists of cytoplasmic cavities bounded by membranes that do not intercommunicate.
- It contains the nucleus and mitochondria.
Which organelle is linked to the nuclear envelope?
Which organelle is linked to the nuclear envelope?
- Endoplasmic reticulum (correct)
- Golgi apparatus
- Lysosomes
- Phagosomes
What is the chemical composition of the endoplasmic reticulum?
What is the chemical composition of the endoplasmic reticulum?
- It contains the plant vacuole.
- It is not composed of membranes.
- It is composed of rough microsomes.
- It may be isolated from the 3rd pellet of the UCD in the form of rough or smooth microsomes. (correct)
What distinguishes the smooth endoplasmic reticulum (SER) from the rough endoplasmic reticulum (RER)?
What distinguishes the smooth endoplasmic reticulum (SER) from the rough endoplasmic reticulum (RER)?
What is the ultrastucture of ER membrane as seen in TEM?
What is the ultrastucture of ER membrane as seen in TEM?
What is used to separate rough from smooth microsomes?
What is used to separate rough from smooth microsomes?
What type of fatty acids are present in the phospholipid bilayer of the smooth microsome membrane?
What type of fatty acids are present in the phospholipid bilayer of the smooth microsome membrane?
What is the main purpose of centrifugation of the smooth microsomes in a sucrose concentration gradient?
What is the main purpose of centrifugation of the smooth microsomes in a sucrose concentration gradient?
What is the approximate protein content in the membrane of the smooth microsomes?
What is the approximate protein content in the membrane of the smooth microsomes?
Where are carbohydrates found in relation to proteins and lipids in the smooth microsome membrane?
Where are carbohydrates found in relation to proteins and lipids in the smooth microsome membrane?
What is the specific content of the cavity in the smooth endoplasmic reticulum (SER) dependent on?
What is the specific content of the cavity in the smooth endoplasmic reticulum (SER) dependent on?
Where does protein synthesis for luminal proteins in the rough endoplasmic reticulum (RER) begin?
Where does protein synthesis for luminal proteins in the rough endoplasmic reticulum (RER) begin?
What is the function of the signal sequence in protein synthesis for luminal proteins in the RER?
What is the function of the signal sequence in protein synthesis for luminal proteins in the RER?
What is the role of Signal Recognition Particle (SRP) in protein synthesis for luminal proteins in the RER?
What is the role of Signal Recognition Particle (SRP) in protein synthesis for luminal proteins in the RER?
What happens after the protein enters the lumen of the RER during protein synthesis for luminal proteins?
What happens after the protein enters the lumen of the RER during protein synthesis for luminal proteins?
What types of proteins can be synthesized in the rough endoplasmic reticulum (RER)?
What types of proteins can be synthesized in the rough endoplasmic reticulum (RER)?
What represents 50 to 60% of the cell volume and is the fundamental substance of the cell in which organelles are immersed?
What represents 50 to 60% of the cell volume and is the fundamental substance of the cell in which organelles are immersed?
What comprises a network of protein filaments and a complex aqueous solution within the cell?
What comprises a network of protein filaments and a complex aqueous solution within the cell?
What is the pH range of hyaloplasm in plant cells?
What is the pH range of hyaloplasm in plant cells?
In which cell part can hyaloplasm be found in the form of a gel or fluid?
In which cell part can hyaloplasm be found in the form of a gel or fluid?
Which part of the cell is specifically criss-crossed by fibrous or tubular structures contributing to its architecture and dynamics?
Which part of the cell is specifically criss-crossed by fibrous or tubular structures contributing to its architecture and dynamics?
Which organelle is linked to the nuclear envelope and plays a role in the architecture and dynamics of the cell?
Which organelle is linked to the nuclear envelope and plays a role in the architecture and dynamics of the cell?
What is the main component of microtubules?
What is the main component of microtubules?
What is the diameter of the microtubules?
What is the diameter of the microtubules?
What stabilizes the structure of microtubules?
What stabilizes the structure of microtubules?
What are the permanent cellular elements made up of stable microtubules?
What are the permanent cellular elements made up of stable microtubules?
What are centrioles composed of?
What are centrioles composed of?
What are the characteristics of cilia and flagella?
What are the characteristics of cilia and flagella?
What types of microtubules are preserved regardless of the fixative and fixation temperature?
What types of microtubules are preserved regardless of the fixative and fixation temperature?
What proteins are associated with the transport of vesicles along microtubules?
What proteins are associated with the transport of vesicles along microtubules?
What is the specific structure that makes up centrioles?
What is the specific structure that makes up centrioles?
What is the diameter of the fine digitiform structures present in cilia and flagella?
What is the diameter of the fine digitiform structures present in cilia and flagella?
