Homework Answers
Ans)4 Lateral diffusion is more common in membrane lipids.This is because during flip flop more energy is needed to do that process means it is energy demanding process as a polar head group has to travel through the non polar region of the memberane which is highly energy demanding process during flip flop.
Ans) Since saturated fatty acid as more melting point than the unsaturated fatty acid.So stearic acid has more melting point than linoelaldic acid becuase stearic is saturated (no double bond).This is due the region that unsaturated fatty acid donot pack tightly in their structure so less amount of energy is needed to separate them so less melting point.
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Question 4 (5 points) Which is more common in membrane lipids.... lateral diffusion of flip-flop diffusion?...
QUESTION 25 Lipids have been shown to move in the membrane. Which statement most accurately describes...
QUESTION 25 Lipids have been shown to move in the membrane. Which statement most accurately describes this movement? Lateral movement of lipids within the same leaflet of the membrane occurs, but is less common, and flip-flop of lipids to the opposite leaflet of the membrane is common Both lateral movement of lipids within the same leaflet of the membrane and flip-flop of lipids to the opposite leaflet of the membrane occur commonly. Lateral movement of lipids within the same leaflet...
which movement of membrane phospholipids in slowest? lateral diffusion D Question 3 1 pts Which movement...
which movement of membrane phospholipids in slowest? lateral
diffusion
D Question 3 1 pts Which movement of membrane phospholipids in SLOWEST? O lateral diffusion O scramblase-mediated movement O transbilayer diffusion flip-floppase catalyzed movement D | Question 4 1 pts
26. Melting Points of Lipids The melting points of a series of 18-carbon fatty acids are:...
26. Melting Points of Lipids The melting points of a series of 18-carbon fatty acids are: stearic acid, 69.6 °C, oleic acid, 13.4 °C; linoleic acid, -5 °C; and linolenic acid, -11 °C. (a) What structural aspect of these 18-carbon fatty acids can be correlated with the melting point? (b) Draw all the possible triacylglycerols that can be constructed from glycerol, palmitic acid, and oleic acid. Rank them in order of increasing melting point. (c) Branched-chain fatty acids are found...
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of...
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of their structure. 4. Glycerophospholipids contain a phosphate portion in their structure. 5. All lipids have a molecule of glycerin as their backbone. 6. Polyunsaturated fatty acids have more than one C-C double bond in their "backbone." 7. Fatty acids are soluble in water. 8....
Question 1 1 pts Which of the following is the most common property of membrane lipids?...
Question 1 1 pts Which of the following is the most common property of membrane lipids? O a. They contain two hydrophobic tails. ob. They are sphingolipids. O c. They are amphipathic. O d. They are phospholipids. Question 2 1 pts Which of the following is most likely to contain a region of 20 hydrophobic amino acids? a. A peripheral membrane protein. b. A transmembrane protein. O c. A GPI-anchored protein. O d. A cytosolic protein. Question 3 1 pts...
Protein kinases can A) Inactivate enzymes by dephosphorylating them B) Activate enzymes by phosphorylating them C)...
Protein kinases can A) Inactivate enzymes by dephosphorylating them B) Activate enzymes by phosphorylating them C) Cleave proteins after Tyr, Ser, or Thr residues D) Contain a catalytic triad to cut peptide bonds Peanut oil contains a high percentage of monounsaturated fatty acids whereas vegetable oil contains a high percentage of polyunsaturated fatty acids. During a cold spell, the peanut oil freezes whereas the vegetable oil remains liquid. Explain why. Predict which one of the following organisms will have the...
plz help Time Taken:0:06:15 Hunter Ramey: Attempt 1 Question 1 (10 points) Match the following. hydrogenation...
plz help
Time Taken:0:06:15 Hunter Ramey: Attempt 1 Question 1 (10 points) Match the following. hydrogenation 1. The second component of triacylglycerols beside glycerol. higher 2. a lipid that cannot be hydrolyzed lower 3. the functional group of triacylglycerols ester 4 a fatty acid with at least one double bond animals 5. the process of converting unsaturated fats into saturated fats fatty acids unsaturated 6. the melting points of saturated fats compared to unsaturated fats hydrolysis 7. a source of...
QUESTION 1 some digestion (hydrolysis) in the stomach. Like proteins, lipids undergo True False QUESTION 4...
QUESTION 1 some digestion (hydrolysis) in the stomach. Like proteins, lipids undergo True False QUESTION 4 A glycerophospholipid and a sphingolipid can be depicted by the cartoon below. Letter (A) is pointing to the polar portion of the lipid. True False QUESTION 5 The neural signal that starts the hormone cascade acts first on the pituitary gland. True False QUESTION 6 Compound (A) would yield more ATP energy than compound (B) during catabolism. -OH (A) OM HO CH, (CH3)-COOH (B)...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O DNA B. A solution with a pH of 9 is considered [Select] and has (Select] hydrogen ions compared to a solution with a pH of 4. Above is a figure of water interacting with an ion. What type of bonds are present between the water molecules and ions? Are electrons being shared between the water molecules and the ion? What type of bonds are...
Are the following statements true or false? 1. Membrane carbohydrates occur as either glycoproteins or glycolipids,...
Are the following statements true or false? 1. Membrane carbohydrates occur as either glycoproteins or glycolipids, and most always face away from the cytosol. 2. The melting temperature of a phospholipid bilayer increase with an increased content of unsaturated fatty acid. 3. Molecules which permeate a plasma membrane by facilitated diffusion require cells to use energy (ATP) for their transfer. 4. “Catabolism” refers to synthetic processes that occur inside the cell. 5. Type I collagen has a membrane bilayer-spanning domain....
QUESTION 25 Lipids have been shown to move in the membrane. Which statement most accurately describes this movement? Lateral movement of lipids within the same leaflet of the membrane occurs, but is less common, and flip-flop of lipids to the opposite leaflet of the membrane is common Both lateral movement of lipids within the same leaflet of the membrane and flip-flop of lipids to the opposite leaflet of the membrane occur commonly. Lateral movement of lipids within the same leaflet...
which movement of membrane phospholipids in slowest? lateral
diffusion
D Question 3 1 pts Which movement of membrane phospholipids in SLOWEST? O lateral diffusion O scramblase-mediated movement O transbilayer diffusion flip-floppase catalyzed movement D | Question 4 1 pts
26. Melting Points of Lipids The melting points of a series of 18-carbon fatty acids are: stearic acid, 69.6 °C, oleic acid, 13.4 °C; linoleic acid, -5 °C; and linolenic acid, -11 °C. (a) What structural aspect of these 18-carbon fatty acids can be correlated with the melting point? (b) Draw all the possible triacylglycerols that can be constructed from glycerol, palmitic acid, and oleic acid. Rank them in order of increasing melting point. (c) Branched-chain fatty acids are found...
Tor F 1. With the exception of steroids, all lipids contain at least one fatty acid. 2. Some lipids contain monosaccharides as part of their structure. 3. Some lipids contain an amino acid as part of their structure. 4. Glycerophospholipids contain a phosphate portion in their structure. 5. All lipids have a molecule of glycerin as their backbone. 6. Polyunsaturated fatty acids have more than one C-C double bond in their "backbone." 7. Fatty acids are soluble in water. 8....
Question 1 1 pts Which of the following is the most common property of membrane lipids? O a. They contain two hydrophobic tails. ob. They are sphingolipids. O c. They are amphipathic. O d. They are phospholipids. Question 2 1 pts Which of the following is most likely to contain a region of 20 hydrophobic amino acids? a. A peripheral membrane protein. b. A transmembrane protein. O c. A GPI-anchored protein. O d. A cytosolic protein. Question 3 1 pts...
Protein kinases can A) Inactivate enzymes by dephosphorylating them B) Activate enzymes by phosphorylating them C) Cleave proteins after Tyr, Ser, or Thr residues D) Contain a catalytic triad to cut peptide bonds Peanut oil contains a high percentage of monounsaturated fatty acids whereas vegetable oil contains a high percentage of polyunsaturated fatty acids. During a cold spell, the peanut oil freezes whereas the vegetable oil remains liquid. Explain why. Predict which one of the following organisms will have the...
plz help
Time Taken:0:06:15 Hunter Ramey: Attempt 1 Question 1 (10 points) Match the following. hydrogenation 1. The second component of triacylglycerols beside glycerol. higher 2. a lipid that cannot be hydrolyzed lower 3. the functional group of triacylglycerols ester 4 a fatty acid with at least one double bond animals 5. the process of converting unsaturated fats into saturated fats fatty acids unsaturated 6. the melting points of saturated fats compared to unsaturated fats hydrolysis 7. a source of...
QUESTION 1 some digestion (hydrolysis) in the stomach. Like proteins, lipids undergo True False QUESTION 4 A glycerophospholipid and a sphingolipid can be depicted by the cartoon below. Letter (A) is pointing to the polar portion of the lipid. True False QUESTION 5 The neural signal that starts the hormone cascade acts first on the pituitary gland. True False QUESTION 6 Compound (A) would yield more ATP energy than compound (B) during catabolism. -OH (A) OM HO CH, (CH3)-COOH (B)...
1.A Which of the following substances is made of lipids? enzymes O plasma membrane sugars O DNA B. A solution with a pH of 9 is considered [Select] and has (Select] hydrogen ions compared to a solution with a pH of 4. Above is a figure of water interacting with an ion. What type of bonds are present between the water molecules and ions? Are electrons being shared between the water molecules and the ion? What type of bonds are...
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