Which of the following is true of a triacylglycerol? 1) A triacylglycerol rarely contains the same...
Which of the following is true of a triacylglycerol?
1) A triacylglycerol rarely contains the same fatty acid at all 3 positions.
2) A triacylglycerol is formed when 3 fatty acids react with the 3 hydroxyl groups of the glycerol moiety.
3) A triacylglycerol always contains the same fatty acid at all three positions.
A) B) only.
B) A) and B) are both correct
C) A) only.
D) C) only.
Homework Answers
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Which of the following is true of a triacylglycerol?
1) A triacylglycerol rarely contains the same...
Help me please?? 16. Which of the following types of compounds are expected products from the...
Help me please??
16. Which of the following types of compounds are expected products from the saponification of an oil? a. glycerol and fatty acids b. glycerol and fatty acid salts c. fatty acid salts and fatty acids d. fatty acids and glycine 17. Prostaglandins and thromboxanes are classes of eicosanoids. a. TRUE b. FALSE In general, lipids are substances that are only sparingly soluble in water a. TRUE b. FALSE 18. 19. In activ e transport, a substance crosses...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b)...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b) aldchydes and ketones with two or more hydroxyl groups. c) acids with two or more hydroxyl groups. d) amines with two or more hydroxyl groups. e) always contain a phosphate group. A9. Which of the following is NOT correct regarding reducing sugars? a) Sugars that react with oxidizing agents are called reducing sugars. b) The cyclic form of a monosaccharide reacts with oxidizing agents....
Triacylglycerol A contains 53% oleic acid, 29% linoleic acid, 9% palmitic acid, 4% stearic acid, 1%...
Triacylglycerol A contains 53% oleic acid, 29% linoleic acid, 9% palmitic acid, 4% stearic acid, 1% myristic acid and lesser amounts of other fatty acids. Triacylglycerol B contains 39% oleic acid, 29% palmitic acid, 24% stearic acid, 2% myristic acid, 2% linoleic acid, and lesser amounts of other fatty acids. Which of the two samples is expected to be solid at room temperature? Why pls? Thanks
1. The typical ratio between the bases in DNA: a. A = T b. C =...
1. The typical ratio between the bases in DNA: a. A = T b. C = G c. A + C = G + T d. All of the above are correct 2. Which of the following is TRUE of sphingolipids? a. They always contain glycerol and fatty acids b. They do not contain glycerol. c. They may contain up to three fatty acids. d. They may be charged, but are never amphipathic. 3. Linoleic acid: a. has two double...
Which way do the fatty acid tails of a phospholipid face in a cell membrane?
QUESTION 1Which way do the fatty acid tails of a phospholipid face in a cell membrane?a.toward the inside of the cellb.toward the outside of the cellc.both directionsd.They lay parallel to the direction of the membrane.QUESTION 2A readily available source of energy that cells use to drive reactions is stored in the ___________ bond.a.phosphodiesterb.phosphoanhydridec.hydrogend.peptideQUESTION 3Which of the following occurs by bringing nonpolar surfaces together to exclude water?a.hydrogen bondsb.hydrophobic forcesc.Van der Waals attractionsd.electrostatic attractionsQUESTION 4How many bonds are made by a carbon...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid,...
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
7. The following monosaccharide is classifieds? C100 H- OH HO- но- н CH OH A D-ketopetose...
7. The following monosaccharide is classifieds? C100 H- OH HO- но- н CH OH A D-ketopetose B. D-aldobese Lad y 8. Which molecule contains a chiral carbon? TH HC CHYCH H O C HYCH, HC 9. Carbohydrates are A) aldehydes and esters with multiple hydroxyl groups. B) ketones and aldehydes with multiple hydroxyl groups C) acids and ketones with multiple hydroxyl groups. D) ethers and aldehydes with multiple hydroxyl bonds 10. The cartoon below represents a membrane Observe the arrows,...
In which of the following pairs of fatty acids does the first listed acid have a...
In which of the following pairs of fatty acids does the first listed acid have a higher melting point than the second listed acid? a. 16:2 acid and 16:0 acid b. 21:0 acid and 17:0 acid c. 17:3 acid and 17:0 acid d. 17:3 acid and 20:0 acid Which of the following fatty acids is both monounsaturated and an omega-6 fatty acid? a. CH3–(CH2)18–COOH b. CH3–(CH2)7–CH=CH–(CH2)7–COOH c. CH3–(CH2)4–CH=CH–(CH2)2–(CH2)6–COOH d. CH3–CH2–(CH=CH–CH2)4–(CH2)2–COOH Which of the following types of compounds are expected products...
The following statements describe different types of lipids. Fill in the blanks by dragging the appropriate...
The following statements describe different types of lipids.
Fill in the blanks by dragging the appropriate term to its correct
location. Note: If you answer any part of this question
incorrectly, a single red X will appear indicating that one or more
of the terms are placed incorrectly.
Compounds that contain a fused ring system are called These have three 6-membered rings and one 5 membered ring. Some of these compounds are found in biological membranes. are the building blocks...
10. Rank the following in the order of increasing solubility in water a triacylglycerol, a diacylglycerol,...
10. Rank the following in the order of increasing solubility in water a triacylglycerol, a diacylglycerol, and a monoacylglycerol, all containing palmitic acid. 11. A mixture of lipid is applied to a silica gel column and then the column is washed with increasingly polar solvents. The mixture contains palmitate, phosphotidylserine, cholesterol, and phosphotidyl ethanolamine. Predict the order of lipids eluted from the column. Explain. 12. Can a pure sample of cholesterol form an artificial bilayer when mixed with water? A)...
Help me please??
16. Which of the following types of compounds are expected products from the saponification of an oil? a. glycerol and fatty acids b. glycerol and fatty acid salts c. fatty acid salts and fatty acids d. fatty acids and glycine 17. Prostaglandins and thromboxanes are classes of eicosanoids. a. TRUE b. FALSE In general, lipids are substances that are only sparingly soluble in water a. TRUE b. FALSE 18. 19. In activ e transport, a substance crosses...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b) aldchydes and ketones with two or more hydroxyl groups. c) acids with two or more hydroxyl groups. d) amines with two or more hydroxyl groups. e) always contain a phosphate group. A9. Which of the following is NOT correct regarding reducing sugars? a) Sugars that react with oxidizing agents are called reducing sugars. b) The cyclic form of a monosaccharide reacts with oxidizing agents....
12. Which of the following best describes the components of phospholipids? A) Glycerol, one fatty acid, two phosphate groups and an aminoalcohol B) Glycerol, two fatty acids, one phosphate group, and an aminoalcohol C) Sphingosine, two fatty acid, one phosphate group and an aminoalcohol D) Glycerol, three fatty acids, and a phosphate group 13. When ribose adopts the most stable cyclic structure hemiacetal, which of the following is happening? A. it becomes a furonose C. an acetal is formed B....
7. The following monosaccharide is classifieds? C100 H- OH HO- но- н CH OH A D-ketopetose B. D-aldobese Lad y 8. Which molecule contains a chiral carbon? TH HC CHYCH H O C HYCH, HC 9. Carbohydrates are A) aldehydes and esters with multiple hydroxyl groups. B) ketones and aldehydes with multiple hydroxyl groups C) acids and ketones with multiple hydroxyl groups. D) ethers and aldehydes with multiple hydroxyl bonds 10. The cartoon below represents a membrane Observe the arrows,...
The following statements describe different types of lipids.
Fill in the blanks by dragging the appropriate term to its correct
location. Note: If you answer any part of this question
incorrectly, a single red X will appear indicating that one or more
of the terms are placed incorrectly.
Compounds that contain a fused ring system are called These have three 6-membered rings and one 5 membered ring. Some of these compounds are found in biological membranes. are the building blocks...
10. Rank the following in the order of increasing solubility in water a triacylglycerol, a diacylglycerol, and a monoacylglycerol, all containing palmitic acid. 11. A mixture of lipid is applied to a silica gel column and then the column is washed with increasingly polar solvents. The mixture contains palmitate, phosphotidylserine, cholesterol, and phosphotidyl ethanolamine. Predict the order of lipids eluted from the column. Explain. 12. Can a pure sample of cholesterol form an artificial bilayer when mixed with water? A)...
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