Tyrosine is a nonessential amino acid in humans. Under what circumstance would it become an essential amino acid?

Q: This amino acid is called

A: Amino acids are organic compounds containing amino and carboxyl functional groups along with a side…

Q: All L amino acids have an S absolute configuration except L - cysteine, which has the R…

A: All amino acids except glycine are chiral. All naturally occurring amino acids are L-amino acids.…

Q: Over time, the glutamine residues of polypeptides are susceptible to deamidation, a reaction in…

A: Glutamine is converted to glutamic acid by a process called deamination. Such reactions are of…

Q: What do the proteins Tau and troponin have in common?

A: Microtubules are the essential part of the cell for various purposes such as cell division,…

Q: What purpose do the unusual amino acids, selenocysteine and pyrrolysine, serve?

A: Amino acids are the building blocks of proteins. They are synthesized by the specific sequence of…

Q: Why do some amino acids have charges while some do not?

A: Amino acids have an amino group, an acid group, and an organic R group. The R group is referred to…

Q: Which derivative of folate is a reactant in the conversion of (a) glycine into serine? (b)…

A: Introduction:   Proteins are biomolecules that consist of one or more long chains of amino acid…

Q: Why are certain amino acids defined as essential for human beings?

A: Amino acids are the biomolecules which are important for the synthesis of proteins. Amino acids are…

Q: Illustrate the pathways to synthesize the following amino acids: glutamine, serine, arginine,…

A: Introduction: Amino acids have a many functions. Amino acids essential functions is to go about as…

Q: Sulfur is a component of two important amino acids to plants and animals, the cysteine and…

A:

Q: What is the difference between essential and non-essential amino acids?

A: Proteins are the building blocks of the body. It plays an essential role in the body. Proteins are…

Q: how do we maintain a steady support of amino acids in the body?

A: Amino acids are the basic units of proteins and proteins are very important for our body because…

Q: What characterizes the C5 amino acids? These amino acids are converted to glutamate then deaminated…

A: Introduction: Amino acids are compounds that contain an amino group, a carboxyl group, and a side…

Q: In sickle cell anemia, an inherited form of anemia in which the hemoglobin distorts the red blood…

A: The mutation that alters the codon that codes for a specific amino acid is called missense mutation.…

Q: Asparagine belongs to amino acid that are classified as

A: Amino acids are essential organic compounds in nature. They comprise of amino group and an…

Q: Why are some amino acids called essential?

A: Amino acids are the organic components that will unite to produce a protein. They serve as the…

Q: The Hell-Volhard Zelinsky reaction produces a product required for amino acid synthesis. True or…

A: Amino acids are compounds that contain alpha-amino and alpha-carboxylate functional groups together…

Q: Why double bonds of fatty acids in our body are generally in cis for?

A: When hydrogens are present in the same plane, it is known as a cis fat. When the hydrogen atoms are…

Q: Why does L-amino acids prevail in biological systems?

A: Amino acids are organic molecules composed of carbon, nitrogen, hydrogen, and oxygen. Amino acids…

Q: Illustrate the pathways to synthesize the following aminoacids:a. glutamineb. serinec. arginined.…

A: Introduction: The macromolecules that contain two functional groups that are amine and carboxyl are…

Q: Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar. Glutaminc Acid,…

A: Biomolecules are organic molecules made up of mainly carbon and hydrogen but there are other…

Q: Why "cellulose is composed of a long, branced chain of B-glucose subunits" is false?

A: Introduction Polysaccharides, also known as polycarbohydrates, are the most common type of…

Q: Why do children need comparatively significant quantities of amino acids like arginine and…

A: Amino acids are a monomers of the polypeptide chain, and they are known to conduct a variety of…

Q: Why are L-amino acids prevalent/common in biological systems?

A: Amino acids are the building blocks of proteins or peptides. Amino acids differ from each other on…

Q: Can an amino acid be both glucogenic and ketogenic? Explain why or why not.

A: The the amino acid is the basic subunit of the protein, which helps to form protein functional…

Q: What functions would you expect to be served by residues such as (a) phenylalanine at the protein…

A: Protein structures are formed by the three-dimensional arrangement of amino acids in a protein…

Q: Name all the amino acids that cannot exist as zwitterions. Please explain.

A: The amino acid is amphoteric in nature, which means they can react with acid as well as bases. The…

Q: What type of noncovalent interaction occurs between the glutamine and threonine side chains? Draw…

A: Non-covalent interactions are the weekly sharing of electrons between the atoms whereas it was an…

Q: Why is rubisco likely to be the most abundant protein in nature?

A: Proteins are organic biomolecules that play an important role in various biological cellular…

Q: Explain the difference between essential and nonessential amino acids. How many of each are there?…

A: Proteins are one of the macronutrients present in the food. They are very essential for growth and…

Q: Is the statement "elongation is the process of introducing double bond in fatty acid", correct?

A: Fatty acid Elongation is the process in which  to make fatty acids longer than 16 carbons occurs in…

Q: In a disease known as phenylketonuria, a person is not able to break down the particular amino acid…

A: Phenylketonuria: Phenylketonuria (also referred as “PKU”) is a unique genetic condition that causes…

Q: Which amino acid metabolism is affected in Alkaptonuria? a. Phenylalanine b. Histidine c.…

A: Alkaptonuria : Autosomal recessive disorder caused by homogentisate 1,2-dioxygenase enzyme…

Q: Indicate which of the following amino acids are ketogenic and which are glucogenic: a. tyrosine b.…

A: Amino acids are classified into glucogenic and ketogenic based on the type of intermediate that is…

Q: The general structure of all amino acids are same except for ___________

A: Amino acids are organic compounds having two functional groups namely carboxyl and amino group. Some…

Q: Why is methionine (Met) not found on the inside of a protein even though it is hydrophobic?

A: The amino acid methionine is considered as one of the essential amino acids. It is a hydrophobic…

Q: Sweet proteins. List the key classes of glycoproteins, their defining characteristics, and their…

A: Glycoproteins are known as specialized proteins that are composed of oligosaccharide chains i.e,…

Q: In the context of protein synthesis, what is meant by an activated amino acid?

A: Protein synthesis is the process in which cells make proteins. It directed by the nucleus, the…

Q: What percentage of the a-amino group of lysine will be protonated at its pI?< 25%…

A: Amino acids are built organic compounds, which contain one amine (-NH2) and one Carboxyl group ( -…

Q: List down the physiological significance of each of the 20 amino acids.

A: Amino acids:  a. Amino acids are the building units of protein and other biomolecules. b. The key…

Q: Which of the following is a purely glucogenic amino acid? A. Leucine B. Tyrosine C. Tryptophan D.…

A: Amino acids can be divided into glucogenic, ketogenic and both glucogenic and ketogenic.

Q: Why are B vitamins water soluble while vitamins A, D, E and K are fat soluble?

A: Vitamins are the organic compounds that are required in several metabolic pathways. Vitamins can be…

Q: Branched-chain amino acids are important in metabolic processes for all of the following reasons…

A: Amino acids are generally used to make protein and poly peptide chain

Q: What is a ketogenic amino acid? Give three examples.

A: Introduction :   Amino acids combine to form proteins. Its basic structure includes:  amino group…

Q: important biological functions of amino or acid derivatives of sugars?

A: Amino Sugars: These can be defined as a chemical compound which is formed by a sugar backbone in…

Q: How the amino acid tryptophan can be synthesized ?

A: Biomolecules are organic molecules made up of mainly carbon and hydrogen but there are other…

Q: Which of the following amino acids is polar in nature? A. Aspartic acid B. Alanine C. Proline D.…

A: On the basis of polarity amino acid can be divided into polar and no npolar amino acids.

Q: What is a glucogenic amino acid? Give three examples.

A: The Fate of carbons in amino acid degradation involves in the classification of amino acids into two…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.