The following unsaturated fatty acids can be found in seminal fluid and act on smooth muscles. a.Linoleic acids b.Oleic acids c.Prostaglandins d.Nervonic acids 2. The process involved when fatty acid chains covalently bonded to a glycerol molecule through an ester linkage is? a.hydrolysis b.oxidation c.phosphorylation d.esterification

The following unsaturated fatty acids can be found in seminal fluid and act on smooth muscles. a.Linoleic acids b.Oleic acids c.Prostaglandins d.Nervonic acids 2. The process involved when fatty acid chains covalently bonded to a glycerol molecule through an ester linkage is? a.hydrolysis b.oxidation c.phosphorylation d.esterification

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 13RQ: Beta oxidation is ______. a. the breakdown of sugars b. the assembly of sugars c. the breakdown of...

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The rate-limiting step in fatty acid synthesis is: a. The reduction of the acetoacetyl group to a ?-hydroxybutyryl group b. Formation of malonyl-CoA from malonate and coenzyme A. c. Condensation of acetyl-CoA and malonyl-CoA. d. The reaction catalyzed by acetyl-CoA carboxylase.
1.A fatty acid with 14 carbon atoms will undergo how many cycles of beta oxidation * 2.An unidentified fluid is received in the laboratory with a request to determine if the fluid is urine or another body fluid. Using routine laboratory tests, what tests would determine that the fluid is most probably urine
Which of the following statements is true of the β - oxidation of an unsaturated fatty acid? a. It is identical to the β-oxidation of a saturated fatty acid. b. It involves an extra step to convert a cis double bond to a trans double bond. c. It involves an extra step to convert a trans double bond to a cis double bond. d. It is completely different from the β-oxidation of a saturated fatty acid.
1. Lipids containing saturated fatty acids have higher melting temperature that those containing unsaturated fatty acids because a. They are more hydrophilic. b. Their hydrocarbon tails pack with each other more tightly. c. They form micelles better. d. Their hydrocarbon tails pack with each other less tightly. 2.Assume we start with 1 Glucose molecule. What are the inputs to the payoff phase of glycolysis? a. 2xPyruvate b. 2xGlyceraldehyde-3P c. 1xDihydoxyacetone-P and 1xGlyceraldehyde-3P d. 2xDihydroxyacetone-P
Order the steps that results in a triacylglycerol containing two palmitic acids and one stearic acid. a. Diacylglycerol reacts with an fatty-acyl-CoA b. Phosphate is remove from phosphatidic acid to form diacylglycerol c. Two of the fatty acyl-CoAs react with glycerol-3-phosphate d. An elongase produce stearic acid e. Stearoyl-CoA is synthesized…
Beta oxidation is ______. a. the breakdown of sugars b. the assembly of sugars c. the breakdown of fatty acids d. the removal of amino groups from amino acids
1.Linoleic acid and linoleic acid cannot be synthesized in human tissues, because of _____. * a.Human cells cannot synthesize unsaturated fatty acids. b.Human cells can synthesize only mono-unsaturated fatty acids. c.The corresponding biosynthetic pathway was lost during evolution. d.Humans are diploid organisms; only polyploidy organisms have enough genes for the synthesis of these fatty acids 2.What product could be formed from the breakdown of amylopectin and cellulose? * a.Cellulose could be broken down into chitin b.Cellulose could be broken down into sucrose c.Amylopectin could be broken down into maltose d.Amylopectin could be broken down into glucosamine 3. Which characteristics distinguishes amylopectin and glycogen? * a.Only glycogen has a coiled shape. b.They have different degrees of branching c.Only amylopectin can form hydrogen bonds d.They have different types of glycosidic bond
Saponification is a reaction in which a. triacylglycerols are incorporated into lipoproteins b. triacylglycerols bind to the serum protein albumin c. fatty acid salts react to form triacylglycerols d. triacylglycerols undergo a base-catalyzed ester hydrolysis
The enzyme phosphoglycerate mutase promotes which of the following? a. the hydrolysis of 3-phosphoglycerate b. the isomerization of 3-phosphoglycerate c. the oxidation of 3-phosphoglycerate d. the reduction of 3-phosphoglycerate
When the activated form of alcohol is used to synthesize glycerophospholipids, CDP-alcohol reacts with diacylglycerol to form glycerophospholipids. In this metabolic pathway, diacylglycerol is most likely produced by: a) Triacylglycerol lipase b) Phosphatidate phosphorylase c) Diacylglycerol lipase d) All of the above e) None of the above
Which of the following is a true statement regarding sphingolipid synthesis? (A) The first step in sphingolipid synthesis is the condensation of palmitoyl CoA with aspartate to form b-ketosphinganine.(B) This process requires the reduction of a ketone that uses NADH as the reducing agent.(C) A fatty acid is attached to dihydrosphingosine to form dihydroceramide. (D) FAD is using as an oxidizing agent to remove a double bond from dihydroceramide.(E) The formation of sphingomyelin requires the attachment of a glucose or galactose molecule to ceramide.
Differentiate fatty acid synthesis and degradation in terms of the following: Fatty acid synthesis Fatty acid degradation a. Subcellular location b. End product c. Co-factors d. Carriers of acyl/acetyl groups between the mitochondria and the cytosol