Podcast
Questions and Answers
Which of the following is NOT a component of the cell membrane?
Which of the following is NOT a component of the cell membrane?
- Phospholipids
- Proteins
- Carbohydrates
- Nucleic acids (correct)
What percentage of the mass of most animal cell membranes is made up of lipids?
What percentage of the mass of most animal cell membranes is made up of lipids?
- 25%
- 50% (correct)
- 75%
- 10%
What is the main function of transmembrane proteins in the cell membrane?
What is the main function of transmembrane proteins in the cell membrane?
- Detect and transduce signals
- Catalyze reactions
- Transport molecules across the membrane (correct)
- Provide structural support
Which type of lipids are the most abundant in cell membranes?
Which type of lipids are the most abundant in cell membranes?
What is the characteristic appearance of cell membranes when viewed in cross-section?
What is the characteristic appearance of cell membranes when viewed in cross-section?
Which organelle is responsible for fatty acid oxidation for energy production?
Which organelle is responsible for fatty acid oxidation for energy production?
What is the main function of the cell membrane?
What is the main function of the cell membrane?
Which process involves the merging of two separate lipid bilayers into one?
Which process involves the merging of two separate lipid bilayers into one?
What is the main function of the Golgi apparatus membrane?
What is the main function of the Golgi apparatus membrane?
Which organelle is responsible for the formation of vesicles to transport lipids and proteins?
Which organelle is responsible for the formation of vesicles to transport lipids and proteins?
Which of the following is NOT a function of cell membranes?
Which of the following is NOT a function of cell membranes?
What is the main role of membrane proteins?
What is the main role of membrane proteins?
What is the composition of the lipid bilayer in cell membranes?
What is the composition of the lipid bilayer in cell membranes?
What is the purpose of cell membrane visualization techniques?
What is the purpose of cell membrane visualization techniques?
What is the role of the plasma membrane in eukaryotic cells?
What is the role of the plasma membrane in eukaryotic cells?
Which type of cell membrane contains the highest percentage of proteins?
Which type of cell membrane contains the highest percentage of proteins?
Which type of cell membrane contains the highest percentage of lipids?
Which type of cell membrane contains the highest percentage of lipids?
Which type of cell membrane contains the highest percentage of carbohydrates?
Which type of cell membrane contains the highest percentage of carbohydrates?
What is the main function of the cell wall in prokaryotic cells?
What is the main function of the cell wall in prokaryotic cells?
Why do phospholipid bilayers spontaneously form sealed compartments?
Why do phospholipid bilayers spontaneously form sealed compartments?
Which type of lipids are found in the inner and outer layers of the cell membrane?
Which type of lipids are found in the inner and outer layers of the cell membrane?
What is the major phospholipid found in mammalian plasma membranes?
What is the major phospholipid found in mammalian plasma membranes?
Which layer of the cell membrane is closer to the extracellular space?
Which layer of the cell membrane is closer to the extracellular space?
Which layer of the cell membrane is closer to the intracellular space (cytoplasm)?
Which layer of the cell membrane is closer to the intracellular space (cytoplasm)?
What is the term for the unequal distribution of phospholipids, other lipids, and membrane proteins between the inner and outer layers of the cell membrane?
What is the term for the unequal distribution of phospholipids, other lipids, and membrane proteins between the inner and outer layers of the cell membrane?
Which technique provides views of surfaces inside the cell?
Which technique provides views of surfaces inside the cell?
What is the main purpose of the freeze-fracture technique?
What is the main purpose of the freeze-fracture technique?
Which type of electron microscopy is used to visualize the cell's nucleus?
Which type of electron microscopy is used to visualize the cell's nucleus?
What is the function of lysosomes in a cell?
What is the function of lysosomes in a cell?
Which phospholipid carries a net negative charge in the plasma membrane of mammalian cells?
Which phospholipid carries a net negative charge in the plasma membrane of mammalian cells?
