Podcast
Questions and Answers
Which of the following is the most abundant lipid in cellular membranes?
Which of the following is the most abundant lipid in cellular membranes?
- Cholesterol
- Phospholipids (correct)
- Glucolipids
- Phosphoinositol
Which of the following is NOT a function of the ER (Endoplasmic Reticulum)?
Which of the following is NOT a function of the ER (Endoplasmic Reticulum)?
- Transportation of proteins and carbohydrates to organelles
- Ca. storage and release
- Oxidation (detoxification) of substrates (correct)
- Biosynthesis of proteins (including all transmembrane proteins), lipids, and glycogen
Most proteins in the ER are glycosylated by addition of a preformed oligosaccharide chain to the side chain NH2 group of an asparagine. Only asparagines in the following sequences become glycosylated (identify two).
Most proteins in the ER are glycosylated by addition of a preformed oligosaccharide chain to the side chain NH2 group of an asparagine. Only asparagines in the following sequences become glycosylated (identify two).
- Asn-X-Thr
- Asn-X-Ser (correct)
- Thr-X-Asn
- Ser-X-Asn
Which statement below about lipid rafts is incorrect?
Which statement below about lipid rafts is incorrect?
Which description(s) below about the ABC transporters is (are) correct?
Which description(s) below about the ABC transporters is (are) correct?
Which enzyme transfers lipid molecules from the cytosolic half to the lumenal half of the ER membrane?
Which enzyme transfers lipid molecules from the cytosolic half to the lumenal half of the ER membrane?
Which of the following is NOT a mediator of protein nuclear import?
Which of the following is NOT a mediator of protein nuclear import?
In healthy cells, which lipid molecules are present only in the inner membrane?
In healthy cells, which lipid molecules are present only in the inner membrane?
Which of the following descriptions about transmembrane proteins is incorrect?
Which of the following descriptions about transmembrane proteins is incorrect?
Which statement about signal sequences is incorrect?
Which statement about signal sequences is incorrect?
What is the most abundant lipid in cellular membranes?
What is the most abundant lipid in cellular membranes?
Which of the following is NOT a function of the Endoplasmic Reticulum (ER)?
Which of the following is NOT a function of the Endoplasmic Reticulum (ER)?
Which statement below about lipid rafts is incorrect?
Which statement below about lipid rafts is incorrect?
Which description(s) below about the ABC transporters is (are) correct?
Which description(s) below about the ABC transporters is (are) correct?
To which structure is the cell nucleus topologically equivalent?
To which structure is the cell nucleus topologically equivalent?
In N-linked glycosylation, which sequence of amino acids allows glycosylation to occur?
In N-linked glycosylation, which sequence of amino acids allows glycosylation to occur?
Which enzyme transfers lipid molecules from the cytosolic half to the lumenal half of the ER membrane?
Which enzyme transfers lipid molecules from the cytosolic half to the lumenal half of the ER membrane?
Which of the following is NOT a mediator of protein nuclear import?
Which of the following is NOT a mediator of protein nuclear import?
In healthy cells, which lipid molecules are present only in the inner membrane?
In healthy cells, which lipid molecules are present only in the inner membrane?
Which of the following descriptions about transmembrane proteins is incorrect?
Which of the following descriptions about transmembrane proteins is incorrect?
Which statement about signal sequences is incorrect?
Which statement about signal sequences is incorrect?
Which description below about peroxisomes is incorrect?
Which description below about peroxisomes is incorrect?
Which description below about Rab proteins is incorrect?
Which description below about Rab proteins is incorrect?
Which of the following statements about transmembrane proteins is incorrect?
Which of the following statements about transmembrane proteins is incorrect?
