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21. Which property has not been observed for membrane proteins? a. energy storage b. transport of...
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated far...
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
Which of the following statements about the lipoproteins given in the introduction are true? Check all...
Which of the following statements about the lipoproteins given in the introduction are true? Check all that apply. A- Lipoproteins are complexes of lipids and proteins. B- Lipoproteins can be distinguished by their densities and composition. C- Lipoprotein densities increase in the following order: chylomicrons, VLDLs, LDLs, HDLs, IDLs. D- Chylomicrons are the only lipoproteins that exclusively carry dietary lipids. E- HDL has a high lipid-to-protein ratio. HDL is termed "bad" cholesterol because it can deposit excess cholesterol in the...
Which of the following statements are true? a. All membrane proteins are bound to the interior...
Which of the following statements are true? a. All membrane proteins are bound to the interior of the membrane. b. Both proteins and lipids undergo transverse diffusion from the inner to outer leaflets. c. Some proteins and lipids undergo lateral diffusion along the surface of the membrane. d. Carbohydrates are found covalently attached to molecules on the outside of the membrane. e. The term 'mosaic' describes a highly-ordered region of the membrane rich in cholesterol and sphingolipids.
1. which is not a factor affecting membrane transport of a molecule? a. molecular size b....
1. which is not a factor affecting membrane transport of a molecule? a. molecular size b. lipid solubility c. its role in homeostasis d. concentration of the molecule 2. True or false: In allosteric enzyme inhibition, the active site is blocked by another molecule 3. Thyroxine (t4) is synthesized from the amino acid called tyrosine, therefore it belongs to the category of hormones called_____. however, since t4 is a ______ hormone, it utilizes an itracellular receptor mechanism. a. steroids; lipid-soluble...
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...
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy....
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy. C. osmosis. D. All of these answers are true. 16. What happens when an animal cell is placed into a hypertonic solution? A. plasmolysis B. crenation occurs C. it swells D. it is unchanged 17. The point on the enzyme where the enzyme causes the substrate to change is called the A. attachment site. B. active site. C. binding site. D. enzyme-substrate complex 18....
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....
8.) which of the following statements does not describe heterotrimeric g proteins involved in the adenylate...
8.) which of the following statements does not describe heterotrimeric g proteins involved in the adenylate cyclase signaling pathway? a. binding to adenylate cyclase triggers the hydrolysis of PIP2 b. consist of three subunits, Galpha, Gbeta, and Ggamma c. can function as a mediator to adenylate cyclase activity d. are anchored to the cytoplasmic side of the membrane e. activates adenylate cyclase by binding to its C2a subunit 9.) which of the following is not associated with the cAMP binding...
Energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds...
check the answer plz
energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds of glucose. a potential:potential kinetic the following is a funsction of cholesterol in the plasma nuidity of the membr passage of substances into and out of the cell d prodection of the membrane prokhryotic or eukaryotic? 9. If you found a iey cell under a microscope how could you determine if that cell was of a a....
19. The degree of membrane fluidity depends on . the percentage of lipids that contain choline b. the percentage of glycolipids c. the percentage of faty acids d the percentage of unsaturated farty acids Membeane proteins can be located a. entirely within the membrane b on the surface of the membeane c. in either position d. the position cannot be determined 20. 21. Which property has not been observed for membrane proseins? a energy storage b. transport of substances into...
15. Diffusion of water through a differentially permeable membrane is called A. active transport. B. energy. C. osmosis. D. All of these answers are true. 16. What happens when an animal cell is placed into a hypertonic solution? A. plasmolysis B. crenation occurs C. it swells D. it is unchanged 17. The point on the enzyme where the enzyme causes the substrate to change is called the A. attachment site. B. active site. C. binding site. D. enzyme-substrate complex 18....
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....
check the answer plz
energy in the from the sun, and store that enerngy as . Plants are able to captone chemical bonds of glucose. a potential:potential kinetic the following is a funsction of cholesterol in the plasma nuidity of the membr passage of substances into and out of the cell d prodection of the membrane prokhryotic or eukaryotic? 9. If you found a iey cell under a microscope how could you determine if that cell was of a a....
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