Podcast
Questions and Answers
Which type of protein is responsible for most of the membrane's specific tasks?
Which type of protein is responsible for most of the membrane's specific tasks?
- Membrane transport proteins
- Transmembrane proteins (correct)
- Intracellular signaling proteins
- Cell-surface receptors
In which type of membrane will you find about 75% protein by mass?
In which type of membrane will you find about 75% protein by mass?
- Plasma membrane
- Intracellular signaling protein membrane
- Cell-surface receptor membrane
- Myelin membrane (correct)
Which type of protein is most likely to be involved in ATP production?
Which type of protein is most likely to be involved in ATP production?
- Intracellular signaling proteins
- Transmembrane proteins
- Cell-surface receptors
- Membrane transport proteins (correct)
What is the approximate ratio of lipid molecules to protein molecules in cell membranes that are 50% protein by mass?
What is the approximate ratio of lipid molecules to protein molecules in cell membranes that are 50% protein by mass?
Which type of proteins vary widely in structure and function reflecting their diverse roles?
Which type of proteins vary widely in structure and function reflecting their diverse roles?
Where are transmembrane proteins located?
Where are transmembrane proteins located?
Which type of membrane proteins are associated with the lipid bilayer only by a covalent linkage to a lipid anchor in the outer monolayer of the plasma membrane?
Which type of membrane proteins are associated with the lipid bilayer only by a covalent linkage to a lipid anchor in the outer monolayer of the plasma membrane?
Which proteins can function on both sides of the lipid bilayer or transport molecules across it?
Which proteins can function on both sides of the lipid bilayer or transport molecules across it?
How are some intracellular signaling proteins associated with the cytosolic half of the plasma membrane?
How are some intracellular signaling proteins associated with the cytosolic half of the plasma membrane?
Which proteins are bound to either face of the membrane by noncovalent interactions with other membrane proteins?
Which proteins are bound to either face of the membrane by noncovalent interactions with other membrane proteins?
How do some proteins associate with membranes in a classical manner?
How do some proteins associate with membranes in a classical manner?
What happens to small GTPases of the Rab protein family in their GTP-bound state?
What happens to small GTPases of the Rab protein family in their GTP-bound state?
Where are sugar residues added to many membrane proteins?
Where are sugar residues added to many membrane proteins?
Where are oligosaccharide chains typically present on a single pass transmembrane protein?
Where are oligosaccharide chains typically present on a single pass transmembrane protein?
Why do sulfhydryl groups in the cytosolic domain of membrane proteins not normally form disulfide bonds?
Why do sulfhydryl groups in the cytosolic domain of membrane proteins not normally form disulfide bonds?
What does the carbohydrate layer on the cell surface mainly consist of?
What does the carbohydrate layer on the cell surface mainly consist of?
What does a thick carbohydrate-rich layer surrounding a lymphocyte in an electron micrograph indicate?
What does a thick carbohydrate-rich layer surrounding a lymphocyte in an electron micrograph indicate?
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