Which one of the following statements is TRUE regarding the molecule shown below? NH2 N. II НО-Р-О- ОНОН O It is a pyrimidine-containing nucleotide found in DNA O It is a purine-containing nucleotide found in RNA O It is a pyrimidine-containing nucleotide found in RNA O It is a purine-containing nucleotide found in DNA

Q: Which of the following is a purine that forms 3 hydrogen bonds with its complementary base? (a) A…

A: Nucleic acids were first discovered by Miescher while studying the pus cells discarded from the…

Q: Which of the following molecules do NOT contribute atoms to purine synthesis? a. Glutamine b.…

A: Purines are nucleotide bases attached to 5 carbon containing sugar molecules. Adenine and guanine…

Q: Do any of the amino acid side groups shown below have the potential to form an ionic bond with any…

A: Ionic bonds are formed between the exchange of electrons between the donor and acceptor groups.

Q: Which is responsible for the stabilization of parallel polypeptide chains in a beta-pleated sheet…

A: Secondary structure refers to the local folded structures that occur inside a polypeptide as a…

Q: Which of the following families:amino acid classifications is/are correct? a.aromatic:Met…

A: Amino acids are biomolecules that have an amino group a carboxyl group and a side group attached to…

Q: Refer to the following titration curve below: 13 12 11 10 9 7 4 2 4 6 8 10 12 14 16 18 20 22 24 26…

A: Amino acids are the basic units of proteins. The amino acids are combined by a peptide bond that…

Q: When X-rays penetrate cells, electrons are ejected from atoms of molecules. Stable molecules can be…

A: X-rays or X-radiation is a type of electromagnetic radiation. They are used for imaging the body…

Q: Which of the following is achiral amino acid co0e cooe H,N-C-H CH3 H,N-C-H HO CH, OH CH3 HO HN NH2…

A: Amino acids are monomeric units that are joined together by peptide bond to produce the growing…

Q: Which of the following is a drawback of using base hydrolysis during amino acid composition? O…

A: A protein is consisted of several amino acids bond together in sequence with peptide bond. To…

Q: Which of the following shows the reaction by which valine and leucine form a peptide bond H. H…

A: Valine and leucine are two amino acids that have branched-chain structures and are essential to the…

Q: Which of the following macromolecules is represented in the picture? * Lauric Acid A fatty acid…

A: Biomolecules are the molecules have important structural as functional role in our body.  1.…

Q: Both RNA and DNA have negatively charged phosphate groups as part of their structure. Would you…

A: Ribonucleic acid (RNA) is an important macromolecule that is present in all biological cells. It is…

Q: Which of the following statements is not true? O RNA contains ribose and DNA contains deoxyribose O…

A: A nucleotide is what occurs before RNA and DNA, while the nucleoside occurs before the nucleotide…

Q: Which of the following bonds (labeled by arrows A-H) will be cleaved by trypsin?   Group of answer…

A: Trypsin is a member of serine protease family. Serine protease are a class of proteolytic enzymes…

Q: Identify the molecule shown below. You may also see the molecule by clicking on this link. H H HO O…

A: Answer

Q: The following is a property of acids, bases, or neither ? H+1 acceptors O A. acids B. bases O C.…

A: An acid is the substance with sour taste, changes blue litmus paper to red, reacts with some metals…

Q: Which of the following explains why methyl anion has a pyramidal geometry while methyl cation is…

A: The methane (CH4) is the lowest possible alkane that can be formed, where a carbon atom is attached…

Q: You have a solution with the mixture of the following peptides: 1) Wing-Cys-Gly 2)phe-tyr-trp-phe…

A: Proteins or polypeptides are made up of chain of amino acids. The name itself indicates that an…

Q: Which of the following statements concerning the D- and L- forms of a monosaccharide is incorrect? O…

A: Sterioisomers are recognised by L and D forms in monosaccharides.  The D form is dextrorotatory…

Q: Define the following terms: a. nucleic acid b. nucleotide c. purine d. pyrimidine e. deoxyribose

A: Nucleic acids are the biopolymers, or large biomolecules, essential to all known forms of life.

Q: In their natural form, amino acids usually exist as the _ stereoisomer while monosaccharides usually…

A: Introduction: Option 1 is correct.

Q: Select the four major types of biomolecules. O Carboxylic acids (carboxylates) OImines V Amino acids…

A: A biomolecule is an organic molecule that is produced by a living organism, they act as building…

Q: What is the building block of proteins?*   A. Carboxylic acid B. Amino acid C. Hydrochloric acid D.…

A: Biomolecules are organic compounds produced by living organisms. They play important function as…

Q: Which of the following linkages/bonds is NOT found in the primary structure of DNA and RNA…

A: Phosphoanhydride bonds are found in ATP molecules as it contains three phosphate group attached to…

Q: Which of these functional groups is involved in the building of a nucleic acid polymer from a…

A: A functional group is a group of atoms in a molecule with distinctive chemical properties,…

Q: Which of the following is incorrect about the peptide Arg-Asp-Cys-Tyr-Gln-Arg-Glu? O a. Its…

A: The peptide given is represented in single letter codes as: RDCYQRE Its structure is:

Q: what organic base is not found in dna

A: Deoxyribonucleic acid (DNA) is the genetic material of almost all organisms, which is composed of…

Q: Which of the following reactions will occur only if coupled to a second, energetically favorable…

A: The occurrence in the cell allows one reaction to couple with another reaction, one of which is…

Q: A chiral molecule is one that is not superposable on its mirror image, thus a chiral carbon is a…

A: A chiral molecule has a chiral center/ asymmetric carbon atom and a non-superposable mirror image.…

Q: Which of the following nitrogenous bases is found in RNA but not in DNA?   A. Thymine   B. Cytosine…

A: For a molecule to act as a genetic material, two nucleic acids, i.e. RNA and DNA are in race, to act…

Q: Which of the following is incorrect about the peptide Val-Leu-Ala-Ser-Gly? It has a net charge of…

A: H3+N-Val-Leu-Ala-Ser-Gly-COO- a) We have 1 positive charge at the N-terminal and one negative charge…

Q: what type of intermolecular forces exist between the side chains of each of the following pairs of…

A: Proteins can exist in multiple levels of structures. The highest structural level possible for a…

Q: Which of the following statements is TRUE? O Right-handed (D) amino acids are unstable, and this is…

A: Amino acids are building blocks of proteins .where they grouped into four categories based on…

Q: In protein synthesis, adenine pairs with ________________________, and guanine pairs with…

A: DNA alone cannot account for expression of genes. RNA is needed to help carry out the instruction in…

Q: All of the following are true regarding amino acid side chains except: a. Five amino acids of the 20…

A: Amino acid are macromolecules which combines together to form polypeptide chain . They consists of…

Q: Which of the following applies to quaternary structure? It has two alpha and two beta subunits O a.…

A: Quaternary structure can be spotted in proteins consisting of two or more identical or different…

Q: Which of the following is incorrect? Oa. None; all the other choices are correct O b. Disulfide…

A: Disulfide bonds are the bonds that are formed between two sulfhydryl groups. It is a covalent bond…

Q: Which of the following pairs of amino acids stabilizes a fold in a polypeptide chain through ionic…

A: Proteins are composed of a linear chain of amino acid sequences attached via peptide bonds. Proteins…

Q: A peptide has the following sequence:   Glu – His – Trp – Ser – Gly – Leu – Arg – Pro – Gly…

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

Q: The carboxylic acid functional group (R-COOH) in an amino acid has a pka of about 5. Under which of…

A: The amino acid with a side chain carboxylic group is called an acidic amino acid. Examples of acidic…

Q: Which of the following is an w-7 fatty acid? O 22:21A1517) O 20:4(A.11.13.15) O 23:3(A4.14.14) O…

A: Omega 7 fattyacids are unsaturated fatty acids with site of Unsaturation at seventh carbon atom from…

Q: Which of the following molecules would you expect to have a lot of nitrogen (N) in it? Group of…

A: The four classes of molecules such as carbohydrates, lipids, proteins, and nucleic acids are…

Q: Which of the following is true of thymine and uracil? A Thymine has a methyl group at C-5 and Uracil…

A: Answer : Option D is correct - thymine has methyl group but uracil doesn't have it.

Q: Which of the following is classified as "steroid"? Phospholipid Glycerol Wax O Cholesterol O O O

A: Steroids are organic molecules that occur naturally in plants, animals, and fungi. The steroid is…

Q: The amino acid T has pKaa-amino = 10.43 and a pKaa-COOH = 2.63. What is the ratio of the conjugate…

A: Given Values: pKa of the amino group = 10.43 pKa of the carboxylic group = 2.63 pH of the solution =…

Q: Which of the following link together amino acid units? A) Glycosidic bonds B) Disulfide bonds C)…

A: Proteins are made up of amino acids, which are chemical molecules that bind to form proteins. The…

Q: What is the point group of the following molecule?                     A)D3h…

A: The symmetry of a molecule depends on the position of the bonded atoms with the central atom. If the…

Q: Which of the following pairs of molecules form the pyrimidine ring?a. Glutamate and carbamoyl…

A: pyrimidine is heterocyclic nitrogenous bases found in the nucleic acids DNA and RNA. In DNA…

Q: Which of the following is incorrect about the peptide Arg-Asp-Cys-Tyr-Gln-Arg-Glu? It has six…

A: Peptides are composed of amino acids joined together via peptide bonds. Peptide bonds are formed…

Q: Which of the following is a DNA nucleotide? A thymine and deoxyribose B a phosphate group, adenine…

A: DNA is made up four nucleotide bases  Adenine Guanine Thymine Cytosine * The adenine is linked to…