Podcast
Questions and Answers
What happens to the retinal molecule when it absorbs a photon?
What happens to the retinal molecule when it absorbs a photon?
- It changes its conformation, resulting in a proton pumping action. (correct)
- It breaks away from the surrounding protein.
- It releases a proton from the extracellular side of the membrane.
- It re-protonates itself to restore its original isomerized form.
What is the function of bacteriorhodopsin?
What is the function of bacteriorhodopsin?
- It pumps protons out of the cell.
- It helps in the formation of a proton gradient. (correct)
- It helps in the synthesis of ATP.
- It facilitates the movement of ions across the cell membrane.
What is the characteristic of the interior of porins?
What is the characteristic of the interior of porins?
- It is hydrophobic.
- It is hydrophilic. (correct)
- It is polar.
- It is non-polar.
What is the typical structure of porins?
What is the typical structure of porins?
Where are the residues more frequent in porins?
Where are the residues more frequent in porins?
In which type of bacteria are porins found?
In which type of bacteria are porins found?
What percentage of membrane proteins in red blood cells is comprised of Band 3?
What percentage of membrane proteins in red blood cells is comprised of Band 3?
What is the function of Band 3 in red blood cells?
What is the function of Band 3 in red blood cells?
What is the function of bacteriorhodopsin in Halobacterium halobium?
What is the function of bacteriorhodopsin in Halobacterium halobium?
What is the structural feature of bacteriorhodopsin?
What is the structural feature of bacteriorhodopsin?
Which of the following is a characteristic of halophilic Archaebacteria?
Which of the following is a characteristic of halophilic Archaebacteria?
What is the wavelength of light absorbed by bacteriorhodopsin?
What is the wavelength of light absorbed by bacteriorhodopsin?
What is the primary function of GPI-protein complexes in Protozoa?
What is the primary function of GPI-protein complexes in Protozoa?
What type of residues are rarely acetylated in GPI-protein complexes?
What type of residues are rarely acetylated in GPI-protein complexes?
What is the purpose of a hydrophobicity analysis of a protein sequence?
What is the purpose of a hydrophobicity analysis of a protein sequence?
In which organism is GPI-protein complex α-agglutinin involved in adhesion?
In which organism is GPI-protein complex α-agglutinin involved in adhesion?
What type of side chains can be attached to the ethanolamine, inositol, and mannose residues in GPI-protein complexes?
What type of side chains can be attached to the ethanolamine, inositol, and mannose residues in GPI-protein complexes?
What is the function of the GPI-protein complex β1-3glucanase in plants?
What is the function of the GPI-protein complex β1-3glucanase in plants?
What percentage of proteins are found in chloroplast membranes?
What percentage of proteins are found in chloroplast membranes?
What type of interactions anchor integral proteins to the membrane?
What type of interactions anchor integral proteins to the membrane?
Which amino acids tend to be found at the lipid-water interface?
Which amino acids tend to be found at the lipid-water interface?
What is a typical feature of integral proteins?
What is a typical feature of integral proteins?
What is the function of glycophorin A?
What is the function of glycophorin A?
What is the function of maltoporin in E. coli?
What is the function of maltoporin in E. coli?
What is the function of lipid anchors in proteins?
What is the function of lipid anchors in proteins?
What is the structure of Glycosyl phosphatidylinositol (GPI) anchors?
What is the structure of Glycosyl phosphatidylinositol (GPI) anchors?
What is the function of GPI-anchored proteins?
What is the function of GPI-anchored proteins?
What is the location of GPI-anchored proteins in the cell?
What is the location of GPI-anchored proteins in the cell?
What is the type of linkage found in GPI anchors?
What is the type of linkage found in GPI anchors?
