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.

Q: We have stated that fatty acids cannot yield a net gain in carbohydrates in organisms that lack a…

A: Fatty acids are the simplest form of lipids and serve as constituents in a large number of complex…

Q: Myristoleic acid is a monounsaturated fatty acid found in small amounts in a variety of foods.…

A: Myristoleic acid would undergo beta-oxidation for its catabolism.

Q: Which step in lipid metabolism would you expect to be affected by 3,4-dihydroxybutyl-1-phosphonic…

A: Lipid metabolism is the synthesis and degradration of lipids in cells, involving the breakdown or…

Q: Acetoacetate undergoes a spontaneous decarboxylation to produce what?

A: The decarboxylation reaction is the chemical reaction that deals with the removal of carbon in the…

Q: Why does the OH group add to the b-carbon rather than to the a-carbon in the second reaction in…

A: Beta oxidation is oxidation of fatty acid on beta carbon. It is mainly divided into three steps:…

Q: In germ-free mice, which harbor no intestinal bacteria, the O-linked oligosaccharides of intestinal…

A: The cell membrane can be defined as a biological membrane that separates the interior of all cells…

Q: 6. Using the figure above. It may be helpful to write

A: Krebs cycle is the breakdown of acetyl coA in mitochondrial matrix of eukaryotes.

Q: ng glycolysis, t

A: “Since you have asked multiple choice question, we will solve the first three question for you. If…

Q: Phosphatidylinositol is formed using phospholipid synthesis strategy #1. Given this information,…

A: Phosphatidylinositol (PI) is a glycerophospholipid which contains a glycerol backbone, two non-polar…

Q: Draw the structure of the acyl CoA formed from palmitic acid, C 15H 31CO 2H. Use this acyl CoA to…

A: Fatty acids are catabolised by β-oxidation. Fatty acid reacts with coenzyme A and forms an acyl CoA.…

Q: From what fatty acid are most of the eicosanoids derived?List several medical conditions in which…

A: Eicosanoids are signaling molecules that are produced via enzymatic oxidation of polyunsaturated…

Q: Consider a preparation that contains all the enzymes and cofactors necessary for fatty acid…

A: Questions 1 - This process takes place in the cytoplasm of the cell. Most of the acetyl-CoA which is…

Q: With fatty infiltration of the liver, the synthesis of phospholipids is disturbed. What is the…

A: Fatty infiltration of the liver, also known as steatosis, occurs when there is an excessive…

Q: For myristic acid, C 13H 27CO 2H: (a) How many molecules of acetyl CoA are formed from complete…

A: β-oxidation : β-oxidation of fatty acids involves four series of reactions. In this reaction the…

Q: Which of the following statements about the transamination and deamination steps of amino acid…

A: The amino acid biosynthetic pathway involves transamination reactions. The alpha-amino group of one…

Q: Select the chemical events that occur between mevalonate and geranyl pyrophosphate during…

A: Acetyl-CoA is a precursor of cholesterol. Acetyl-coA is then converted into cholesterol by using…

Q: 20.14 Predict the name of the enzyme that catalyzes each of the fol- lowing reactions: a. hydrolyzes…

A: Catalysts are molecules that elevate the rate of the chemical reaction without undergoing any change…

Q: What are the main differences between beta oxidation of saturated fatty acid and beta oxidation of…

A: Beta oxidation is a catabolic process in which fatty acids are broken down into acetyl co A and…

Q: Will an amino acid be glucogenic or ketogenic if it is catabolized to the following molecules?(a)…

A: Glucogenic amino acids are the amino acids that are converted into glucose through gluconeogenesis…

Q: How many high-energy phosphates are generated or consumed in (a) converting 1 mole of glucose to…

A: The ATP is the energy rich phosphate molecule that is utilised during the energy requiring reactions…

Q: Consider the complete oxidation of a mixed TAG containing the following fatty acid residues: At…

A: Background information for Triglycerides or Triacylglycerols (TAG) Triacylglycerols are a group of…

Q: Transamination reactions have been described as ping-pong reactions. Use the reaction of alanine…

A: Ping pong reaction is also considered as the double displacement reaction, in which one group is…

Q: a) What is the overall function of pyruvate carboxylase? b) Describe the role of each of the four…

A: (a) A metabolic enzyme called pyruvate carboxylase takes part in the first stage of gluconeogenesis.…

Q: What is the metabolic purpose of linking a fatty acid tocoenzyme A?

A: Fatty acid metabolism consists of various metabolic reactions involving fatty acids and can generate…

Q: Select the chemical events that occur between isopentenyl pyrophosphate and lanosterol during…

A: Cholesterol act as a building block for synthesizing various steroid hormones, vitamin D, and bile…

Q: Describe how a) Mean Arterial Pressure, b) Maximal Oxygen Consumption, and c) Blood Flow are…

A: The human body is complex and it requires the coordinated action of many systems. The circulatory…

Q: 1. What citric acid cycle intermediate is produced from the 3 carbon propionyl-CoA product formed in…

A: Introduction The Citric Acid Cycle Which Is Also Known As The TCA Cycle (Tricarboxylic Acid Cycle)…

Q: When some of the carbons of glutamate are converted to glycogen, what is the order of the following…

A: Glutamine act as a regulator for carbohydrate metabolism where it stimulates the hepatic and renal…

Q: Energy is released in the process of lipid degradation. a)Into which form is the fatty acid…

A: Fatty acid degradation is the process of break down the fatty acid molecules in their metabolites…

Q: In the hydrolysis of lipids a 'pancreatin' solution is used.  This is a mixture of pancreatic…

A: The system that helps in the breakdown of large and complex food particles into smaller and simple…

Q: (a) Wakil's pioneering studies on fatty acid synthesis included the crucial obs is required for the…

A: fatty acids are essential fatty acids which possess the most potent immunomodulatory activities. It…

Q: (b) (i) What is the one disadvantage of the otherwise healthy membranes comprising unsaturated…

A: Phospholipid constitutes of two long chains fatty acyl groups. That can either be saturated or…