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An enzyme that moves a lipid from the outer leaflet to the inner leaflet of a...
4. In the plasma membrane, phosphatidylcholine is predominantly in the outer leaflet and phospbatidylseting is predominantly...
4. In the plasma membrane, phosphatidylcholine is predominantly in the outer leaflet and phospbatidylseting is predominantly in the inner leaflet. This means that there is high flippase activity for phospbatidylsetine there is high flippuse activity for phosphatidylcholine phosphatidylcholine inserted into the outer leaflet and phospbatidylsetine inserted into the inner leaflet phosphatidylcholine inserted into the pancytoplasmic side of the ER membrane 5. Which of the following is(are) NOT true about phospholipid synthesis and distribution in a eukaryote? when a vesicle fuses...
which of the following are not enzymes involved in moving phospholipids from one leaflet to another...
which of the following are not enzymes involved in moving
phospholipids from one leaflet to another
12. Membrane dynamics Page: 396 Difficulty: 2-。Ans: C Which of the following are not enzymes involved in moving phospholipids from one leaflet to another A) Flippases that move phosphatidylethanolamine and phosphatidylserine B) Floppases that move phospholipids from the cytosolic leaflet to the extracellular leatiet C) Flip-floppases that allow phospholipids to move back and forth between the inner and outer leaflets D) Scramblases that allow...
13. This type of lipid is liquid at room temperature. 14. Fats are stored in this type of cell. 15. This type of en...
13. This type of lipid is liquid at room temperature. 14. Fats are stored in this type of cell. 15. This type of enzyme releases fatty acids from fat. 16. These groups are commonly linked to phosphatidic acid through ester bonds. (4 points) 17. This type of phosphatide is one of the most common and preferentially located on the inner leaflet of the plasma membrane. 18. This type of phosphatide is preferentially located on the inner leaflet of the plasma...
Which of these statements about the composition of membranes is true?
Which of these statements about the composition of membranes is true?A) All biological membranes contain cholesterol.B) Free fatty acids are major components of all membranes. C) The inner and outer membranes of mitochondria have different protein compositions.D) The lipid composition of all membranes of eukaryotic cells is essentially the same.E) The lipid: protein ratio varies from about 1: 4 to 4: 1Membrane proteins:A) ere sometimes covalently attached to lipid moieties:B) are sometimes covalently attached to carbohydrate moieties.C) are composed of...
The membrane surrounding a living cell consists of an inner and an outer wall that are...
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.1 10-6 C/m2. (a) What is the magnitude of the electric field within the cell membrane? N/C (b) Find the magnitude of the electric force that would be exerted on a potassium ion...
Please answer as many as you can. Will rate!! Across 4. Type of protein that spans...
Please answer as many as you can. Will
rate!!
Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
what is the function of mitochondria? please draw the structure, labeling the inner, outer membranes, matrix,...
what is the function of mitochondria? please draw the structure, labeling the inner, outer membranes, matrix, and intermembrane space. what are the cytoskeletons and what are their functions? . what are the tight, gap and anchoring junctions? . define amphipathic . what are the functions of membrane proteins . what will happen to a cell if it is placed into a hypotonic solution? hypertonic solution? isotonic solution? . if a molecule moves across the membrane using a protein channel, it...
1. The outer leaflet of the outer membrane is composed of _______ and _______. Di glucosamine...
1. The outer leaflet of the outer membrane is composed of _______ and _______. Di glucosamine which has a hydrophilic characteristic; myristic acid which has a hydrophilic characteristic N-acetyl glucosamine which has a hydrophobic characteristic; myristic acid which has a hydrophilic characteristic Di glucosamine which has a hydrophobic characteristic; myristic acid which has a hydrophobic characteristic Di glucosamine which has a hydrophillic characteristic; myristic acid which has a hydrophobic characteristic N-acetyl glucosamine which has a hydrophillic characteristic; myristic acid which...
1) Select the cellular (and subcellular, if relevant) location for each enzyme listed below. (Cytoplasm,Inner membrane...
1) Select the cellular (and subcellular, if relevant) location for each enzyme listed below. (Cytoplasm,Inner membrane of mitochondria, outer membrane of mitochondria, Matrix of mitochondria) Phosphofructokinase: ATP synthase: Hexokinase: Pyruvate dehydrogenase: Aldolase: Citrate synthase: NADH dehydrogenase complex: 2) Based on our discussion in class, which enzyme performs the first committed step in glycolysis? ( i picked hexokinase on this and got it wrong) a. phosphofructokinase b. pyruvate kinase c. hexokinase d. cytochrome e. aldolase
1. Extensive treatment with phospholipase A2 of a right-side-out, sealed plasma membrane vesicle preparation from a human fibroblast cell line hydrolyzes a fraction of the lipids in each phosphol...
1. Extensive treatment with phospholipase A2 of a right-side-out, sealed plasma membrane vesicle preparation from a human fibroblast cell line hydrolyzes a fraction of the lipids in each phospholipid class (see table below). Note that phospholipase A2 hydrolyzes the ester linkage on the fatty acyl chain at the 2-position of a phosphoglyceride. Assuming that the accessible substrate lipids are present on both leaflets (monolayers) of the plasma membrane, calculate the phospholipid composition of each leaflet. Report the calculated percentage of...
4. In the plasma membrane, phosphatidylcholine is predominantly in the outer leaflet and phospbatidylseting is predominantly in the inner leaflet. This means that there is high flippase activity for phospbatidylsetine there is high flippuse activity for phosphatidylcholine phosphatidylcholine inserted into the outer leaflet and phospbatidylsetine inserted into the inner leaflet phosphatidylcholine inserted into the pancytoplasmic side of the ER membrane 5. Which of the following is(are) NOT true about phospholipid synthesis and distribution in a eukaryote? when a vesicle fuses...
which of the following are not enzymes involved in moving
phospholipids from one leaflet to another
12. Membrane dynamics Page: 396 Difficulty: 2-。Ans: C Which of the following are not enzymes involved in moving phospholipids from one leaflet to another A) Flippases that move phosphatidylethanolamine and phosphatidylserine B) Floppases that move phospholipids from the cytosolic leaflet to the extracellular leatiet C) Flip-floppases that allow phospholipids to move back and forth between the inner and outer leaflets D) Scramblases that allow...
13. This type of lipid is liquid at room temperature. 14. Fats are stored in this type of cell. 15. This type of enzyme releases fatty acids from fat. 16. These groups are commonly linked to phosphatidic acid through ester bonds. (4 points) 17. This type of phosphatide is one of the most common and preferentially located on the inner leaflet of the plasma membrane. 18. This type of phosphatide is preferentially located on the inner leaflet of the plasma...
Please answer as many as you can. Will
rate!!
Across
4. Type of protein that spans the entire
membrane
5. One of the amino acid residues used to form
O-linked glycoproteins.
7. Newly synthesized phospholipids are
inserted into the _____ side of the smooth ER membrane.
8. Type of bond used to link membrane proteins
to a membrane lipid
10. One of the sugars that can be added to
phosphatidylinositol to make glycosylphosphatidylinosiol
12. Enzyme that joins fatty acids and...
1. Extensive treatment with phospholipase A2 of a right-side-out, sealed plasma membrane vesicle preparation from a human fibroblast cell line hydrolyzes a fraction of the lipids in each phospholipid class (see table below). Note that phospholipase A2 hydrolyzes the ester linkage on the fatty acyl chain at the 2-position of a phosphoglyceride. Assuming that the accessible substrate lipids are present on both leaflets (monolayers) of the plasma membrane, calculate the phospholipid composition of each leaflet. Report the calculated percentage of...
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