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15. The process by which double-bonds in unsaturated fatty acids are converted to single bonds is...
Which of the following statements about lipids is FALSE? a) Fatty acids are amphipathic molecules that...
Which of the following statements about lipids is FALSE? a) Fatty acids are amphipathic molecules that can form micelles in aqueous solution. b) Triglycerides store less energy than a similar mass of glycogen. c) Prostaglandin and thromboxane are important signaling molecules that are fatty acid derivatives. d) Steroid hormones are sufficiently non-polar to diffuse through cell membranes without the help of a transporter. e) Phospholipids are amphipathic molecules that can form vesicles in aqueous solution.
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...
1. Which of the following statements describes lipids? A) Lipids all have the steroid backbone. B)...
1. Which of the following statements describes lipids? A) Lipids all have the steroid backbone. B) The body stores excess calories as lipids. C) Lipids are insoluble in water, but soluble in nonpolar solvents. D) Lipids are soluble in water, but insoluble in nonpolar solvents. E) Lipids are insoluble in all solvents 2. Which of the following type of molecule is not a lipid? A) amino acid B) triglyceride C) phospholipid D) steroid E) eicosanoid 3. Which type of lipid...
8. A macromolecule made up of multiple monomers of amino acids is called a:
8. A macromolecule made up of multiple monomers of amino acids is called a:a. Carbohydrateb. Proteinc. Nucleic acidd. Lipid9. The majority of carbohydrates have a carbon to hydrogen to oxygen ratio ofa: 1.1 .4b. 2.6 .2c. 1: 411d. 112: 110. The part of the cell envelope that is a phospholipid bilayer with embedded proteins is called:a. The plasma membraneb. The cell wallo. Cellulose,d. None of the above11. Which of the three kinds of Lipid molecules is characterized by their arrangement...
3. Identify the following features of this phospholipid:
3. Identify the following features of this phospholipid: a. Is the phospholipid formed from glycerol or sphingosine? b. What is the fatty acid? c. What type of bond connects the fatty acid? d. What is the amino alcohol?5. What is the function of the lipid bilayer in a cell membrane?6. How do molecules of cholesterol affect the structure of cell membranes?7. How do the unsaturated fatty acids in the phospholipids affect the structure of cell membranes? 9. What is the difference between...
3. Many snake venoms contain a phospholipase A2 enzyme that hydrolyzes the C2 fatty acid from...
3. Many snake venoms contain a phospholipase A2 enzyme that hydrolyzes the C2 fatty acid from a phospholipid to yield a corresponding lysophospholipid with a single hydrocarbon tail. High concentrations of lysophospholipids can disrupt membrane function and lead to cell death. 0 0 CH-0-0-R R-0-0-CH 0 CH2-0-P-0-X 0 Phospholipid HOR -C-OH free fatty acid CH-0-C-R + H-0ẠCH 0 phospholipase A2 CH,-0-2--0-X 0 Lysophospholipid Figure 2. Action of phospholipase A2. X=polar head group. R=long hydrocarbon tails. a. Phospholipids do not form...
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...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that are held together by Animals store glucose in long, branched polymers called glucose in long, linear polymers called called the enzyme for degrading Steroids Hydrophilic Cholesterol Cellulose Glycoproteins bonds. Plants store or as branched polymers Animals can digest these polysaccharides, but most lack which serves as dietary fiber Lipids are be stored or broken down for energy down to produce energy. Lipids are stored...
Juliana Etienne ; blanni Saint Jean Page 117 of 147 Stephanie Florant Sci 122 L'ab9 Lipids...
Juliana Etienne ; blanni Saint Jean Page 117 of 147 Stephanie Florant Sci 122 L'ab9 Lipids Pre-lab study questions 1. Lipids are a group of molecules that can be divided into five major subgroups based on their Structure and function in the body. Give the specific name to each of the following lipid subgroups: fatty acids ; long chain hydrocarbons with a carboxyl groups. parts of Triglycerides and phospholipids : critical mediators of immune response fat and oil in food...
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...
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...
3. Many snake venoms contain a phospholipase A2 enzyme that hydrolyzes the C2 fatty acid from a phospholipid to yield a corresponding lysophospholipid with a single hydrocarbon tail. High concentrations of lysophospholipids can disrupt membrane function and lead to cell death. 0 0 CH-0-0-R R-0-0-CH 0 CH2-0-P-0-X 0 Phospholipid HOR -C-OH free fatty acid CH-0-C-R + H-0ẠCH 0 phospholipase A2 CH,-0-2--0-X 0 Lysophospholipid Figure 2. Action of phospholipase A2. X=polar head group. R=long hydrocarbon tails. a. Phospholipids do not form...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that are held together by Animals store glucose in long, branched polymers called glucose in long, linear polymers called called the enzyme for degrading Steroids Hydrophilic Cholesterol Cellulose Glycoproteins bonds. Plants store or as branched polymers Animals can digest these polysaccharides, but most lack which serves as dietary fiber Lipids are be stored or broken down for energy down to produce energy. Lipids are stored...
Juliana Etienne ; blanni Saint Jean Page 117 of 147 Stephanie Florant Sci 122 L'ab9 Lipids Pre-lab study questions 1. Lipids are a group of molecules that can be divided into five major subgroups based on their Structure and function in the body. Give the specific name to each of the following lipid subgroups: fatty acids ; long chain hydrocarbons with a carboxyl groups. parts of Triglycerides and phospholipids : critical mediators of immune response fat and oil in food...
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...
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