Which form of aspartic acid in Problem 18.54 is the zwitterion? What is the pI for the zwitterion?

Q: Are triacylglycerols :  insoluble in water? very oxidized, contain-glycerol-fatty acids and…

A: Triacylglycerols are non-polar and hydrophobic.

Q: How many chiral centers are there in the open-chain form of glucose? In the cyclic form?

A: Chiral carbons are asymmetric carbon atoms that are attached to four different atoms. Each chiral…

Q: What is the structure of a simple triaclyglycerol from compound J and H

A:

Q: Does gentiobiose (Problem 20.66) have an acetal grouping? A hemiacetal grouping? Do you expect…

A: Gentiobiose is a disaccharide composed of two glucose molecules. It is a constituent of plant…

Q: What is the name of the non-reducing monosaccharide found in the disaccharide shown here?

A: The sugars (or carbohydrates) that can be oxidized by the action of mild oxidizing agents, are known…

Q: What sugar is produced by the epimerization of galactose?

A: Sugars are defined as the sweet-tasting compounds that are present in various food sources such as…

Q: Can there be any chiral carbon atoms in triacylglycerols? If so, which ones can be chiral and what…

A: Chiral carbon centers are carbon atoms that are attached to four different substituents, that are…

Q: Is the nitrogenous base a pyrMirine or purine? How did you know

A: The DNA and RNA are composed of nucleotides. It is the basic unit of the genetic material of an…

Q: Hypoglycin A, an amino acid derivative found in unripened lychee, is an acutely toxic compound that…

A: There are 20 different amino acids that exist in nature. They are involved in forming the protein…

Q: Which of the following define the stereochemistry of alanine (as per the structure shown)? Note:…

A: stereochemistry can be defined as the arrangement of functional groups on the alpha carbon atom with…

Q: Is the OH substituent of the A ring of cholesterol an a-substituent or a b-substituent?

A: In cyclic compounds β- substituents indicated by a solid wedge. So the OH substituent of the A ring…

Q: What is the structural difference between thymine and uracil?

A: The DNA and RNA are made up of long strands of nucleotides which are attached to each other by…

Q: at is the pyranose/furanose ring structure of this sugar?

A:

Q: Besides asymmetric hydrogenation (Section 29.4), several other methods are now available for the…

A: Except for glycine, amino acids have a chiral carbon atom next to the carboxyl group.…

Q: What is the structure of the intermediate formed during the conversion of dihydroxyacetone phosphate…

A: Introduction: The metabolic pathway by which glucose converts into ATP and pyruvate is known as…

Q: How many reducing ends and non reducing end does O-a-D-glucopyranofil(l ➔1) a-D-glucopyranoside(a…

A: Disaccharides are  simple sugars composed of 2 monosaccharides connected via a glycosidic bond. They…

Q: Name the two purines and the three pyrimidines.

A: The purines and pyrimidines are the nitrogenous bases that are hydrophobic, planar, and weak bases.…

Q: What sugar is produced by the epimerization of galactose?

A: Sugars are sweet-tasting chemicals found in a variety of foods, including fruits, vegetables, dairy…

Q: What is the structural difference between the monosaccharides glucose and galactose?

A: Monosaccharides are the simple sugar, that can not be hydrolyzed. Monosaccharides have the general…

Q: How many chiral carbon atoms are there in each of the two parts of the repeating unit in heparin (p.…

A: Heparin is used to treat and prevent blood clots that are caused by certain medical conditions or…

Q: What is the “octet rule” and its biologically important exception?

A: Within the domain of molecular science the interactions between atom's and how they share electrons…

Q: Name a naturally occurring carbohydrate and its source for each type of carbohydrate listed in…

A: Carbohydrate is a biomolecule that contains hydrogen, oxygen, carbon, and the hydrogen atom.…

Q: What is the structural difference between an aldose and a ketose?

A: Carbohydrates are the simple sugars which contains carbon , hydrogen and oxygen compounds .…

Q: What are the major three forms of deoxyribonucleic acid?

A: The X ray studies of DNA crystals has revealed that DNA has more structural diversity at atomic…

Q: Trehalose, a disaccharide found in the blood of insects, has the following structure. What simple…

A: Trehalose, an unusual disaccharide sugar derivative derived from the insects, consists of two…

Q: Why is the structure of ornithine so similar to the structure of citrulline?

A: Ornithine is basically an amino acid that is usually not coded by DNA. Citruline is a non essential…

Q: What are pyrimidine dimers ?

A: Nucleic acids are macromolecules comprised of carbon, hydrogen, oxygen, nitrogen, and phosphorus.…

Q: What is the Haworth projection for D-Ribulose? And L-Ribulose?

A: Ribulose is a simple sugar and a ketopentose, which means it contains five carbon atoms and a ketone…

Q: What's atropisomer?

A: Introduction :- Atropisomers are stereoisomers formed by impeded rotation around a single bond, when…

Q: crystallinity of phenazopyridine

A: Phenazopyridine is an azo dye with local analgesic and anesthetic effects on the urinary tract.…

Q: What is unusual about glutathione’s structure? (If you cannot answer this question, draw the…

A: Glutathione is a tripeptide comprised of glutamine, cysteine, and glycine. It is an antioxidant…

Q: What are three examples of eicosanoids and their generalfunctions?

A: The eicosanoids are basically fatty acid derivatives having hormone-like actions on various tissues…

Q: Part A Are mannose and galactose, allose and altrose, gulose and talose, and ribose and arabinose…

A: Enantiomers are the pair of molecules that are non superimposable mirror images to each other. They…

Q: What is the structural relationship between L-glucose and D-glucose?

A: Stereoisomers are the isomers that have the same chemical formula but differ in their orientation.…

Q: What is  the formate ion CHO2 ?

A: An ion is a an atom or molecule which is charge, either positively or negatively, based on the…

Q: The net charge on the most prevalent form of bisphosphoglycerate in blood is what?

A: Bis phospho glycerate is an intermediate form in the conversion of 3 phospho glycerate to…

Nitrogen metabolism

Nitrogen metabolism is the synthesis, utilization or uptake, breakdown, and excretion of nitrogenous compounds in the body. The nitrogen metabolism encompasses nitrogen fixation, biosynthesis, and the breakdown of amino acids, purines, and pyrimidine. Since nitrogen-containing compounds are required for various life processes, nitrogen is an important element of life.