Purines are characterized by triple hydrogen bonds. The statement is    TRUE OR FALSE

Q: In the compound of urea and cholesterol, why does one compound dissolve in water while the other one…

A: Urea is present in urine or uric acid of most living organisms and has a chemical formula (NH2)2CO.…

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: A molecule with the chemical formula C6H12O6 is probably a

A: Carbohydrates: - they are molecules made up of carbon, hydrogen, and oxygen atoms, usually in a…

Q: the making and breaking of chemical bonds is called

A: A chemical bond is defined as an attraction present between the atoms either due to electron sharing…

Q: element responsible for the distinct odor of thiols and thioether

A: Thiols give off strong, unpleasant odors resembling that of garlic or rotten eggs hence are used as…

Q: Chemical formula of Nucleotides

A: The nucleic acids are formed from monomers called nucleotides. There are four nucleotides in DNA,…

Q: Chiral compounds, have identical chemical properties but differing in certain physical and…

A: Chiral compounds contain atleast asymmetric carbon it means chiral carbon is attached with four…

Q: Peptide bond is a

A: A peptide bond is a chemical bond formed between two molceules when the carboxyl group of one…

Q: C6h1206 is the chemical formula for a

A: Given formula: C6H12O6  It means 6 carbon, 12 hydrogen and 6 oxygen

Q: Pyrimidines are single ringed structures which include the nitrogenous bases O guanine and adenine O…

A: Nitrogen bases These are also known as nucleobases and these are the building blocks of nucleic…

Q: Describe the characteristics of transition metals.

A: Elements that have d orbit partially filled are known as Transition elements. These metals come…

Q: In the accompanying figure, the atomic number refers to the:

A: The given is C (carbon) The atomic number is 6 The mass number is 12

Q: is the bond length of HF, which exhibits a rotational spectrum

A:

Q: What is chemically nonsensical about this structure? H-C=C-H

A: Shared electron pairs, or covalent bonds, hold molecules together. These bonds are directional,…

Q: The product of the reaction between an aldehyde or ketone and an amine is called a _____________…

A: The product of the reaction between an aldehyde or ketone and an amine is called a Schiff base.

Q: What kind of isomers are they

A: Carbohydrates are simple monosaccharides that are made up of carbon, hydrogen, oxygen and have…

Q: Butanoic acid (C3H7COOH) is described as a weak acid. Define the term weak acid

A: Acids are chemical compounds that taste sour and turn the blue litmus red. They have a pH of less…

Q: Explain why snow is not a pure element. What is the composition of snow? Describe its solid phase…

A: Snow is the precipitation in the form of ice crystals. It originates in clouds when temperatures are…

Q: Aldehyde and ketone functional group

A: Functional groups are substituents that are attached to a molecule and are responsible for the…

Q: Define the following terms:(a) Chiral (b) Achiral(c) Chiral carbon (d) Enantiomer

A: Stereoisomerism is a form of isomerism in which molecules have the same molecular formula and…

Q: his is the structure of 2,4-dimethyl-1-pentanol.

A: 2,4-dimethyl-1-pentanol has the molecular formula of C7H16O.

Q: A. Alcohol B. Benzathracine E. Cyclophosphamide D. Benzidine E. Dimethylsulfate

A: Carcinogen : It is an agent with the capacity to cause  cancer in humans . Carcinogens may be…

Q: What type of alkyl halide is this? (CH3)2CHB"

A: Alkyl halides are chemical compounds that are often derived from alkanes that contain one or more…

Q: the following? A. Thiamine B. Selenium C. Zinc

A: The clinical scenario is suggestive of keshan  disease which is an endemic cardiomyopathy found in…

Q: Water forms stronger hydrogen bonds than ammonia. Suggest a reason for this.

A: Hydrogen-bonding is considered as the weakest bond, which is present between the two electronegative…

Q: The anomeric carbon atom is the carbon atom that contain the carbonyl group

A: The anomer is an epimer at the hemiacetal/hemiketal carbon in a cyclic structure.

Q: Difference between purines and pyrimidines?

A: A purine is an aromatic heterocycle composed of carbon and nitrogen. Purines include adenine and…

Q: An -OH group is a(n) _______ group.

A: The functional group is a specific group of atoms or bonds within a compound that is responsible for…

Q: alkyl halide

A: Alkyl halides (haloalkanes) are a kind of chemical compound which are obtained from alkanes and…

Q: What element is an essential component in organic compounds

A: Organic compounds are those compounds which were first identified in living systems. These compounds…

Q: true or false The bonds linking bases and sugars are covalent.

A: Nucleosides are glycosamines. They are composed of a nitrogenous base and a sugar molecule.  The…

Q: Classify the following carbohydrates as : A. Monosaccharide B. Disaccharide C. Oligosaccharide D.…

A: Pentose is a five-carbon simple carbohydrate (monosaccharide). An example of a pentose sugar would…

Q: A condition in some metals and nonmetals where they can have more than one crystal structure.

A: Above their melting point, the atoms of metals and nonmetals are randomly arranged and are…

Q: Which mineral is a carbonate a compound that contains a -co3 group

A: Carbon dioxide is soluble in water. In a reversible reaction, it makes carbonic acid with water…

Q: Glucose has two names when it is a sugar alcohol

A: In biochemistry, an organic compound that is mainly derived from a carbohydrates monomer (sugars)…

Q: One of these forms of cocaine is relatively insoluble inwater: which form, the free base or the…

A: Cocaine is a potent drug which is abused in many forms. It can be smoked, or dissolved into a…

Q: A topping for ice cream contains fructose, hydrogenated soybean oil, salt, and cellulose. What types…

A: Atoms are small substances that together make molecules and compounds.

Q: This compound is directly involved in:

A: The given structure is of NADPH. NADPH is reduced form of NADP+.  The major source of NADPH in…

Q: _____________ is a peptide that protects cells by reacting with peroxides

A: _____________ is a peptide that protects cells by reacting with peroxides

Q: Cystine is unique among the amino acids because it contains a _____________ bond

A: Cystine is a unique amino acid. It is formed by two cysteine molecules joined together. It is more…

Q: Define the following terms: a. arginosuccinate b. Krebs bicycle c. N-acetylglutamate d. BH4 e.…

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

Q: A high-energy compound is a compound that contains a bond that is

A: Bonding between the atoms in a molecule may be covalent or ionic. Ionic bonds are formed due to…

Q: Which of the following is not a use for cellulose?(a) lumber for building(b) fodder for cattle(c)…

A: Cellulose is a polysaccharide of glucose that is present in the plant's cell wall and is…

Q: Which one of the following substances would you expect to be most soluble in water? A) Butanol B)…

A: solubility in water depends on various factors one of which is the hydrogen bonding formed by the…

Nucleotides

It is an organic molecule made up of three basic components- a nitrogenous base, phosphate,and pentose sugar. The nucleotides are important for metabolic reactions andthe formation of DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). 

Nucleic Acids

Nucleic acids are essential biomolecules present in prokaryotic and eukaryotic cells and viruses. They carry the genetic information for the synthesis of proteins and cellular replication. The nucleic acids are of two types: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The structure of all proteins and ultimately every biomolecule and cellular component is a product of information encoded in the sequence of nucleic acids. Parts of a DNA molecule containing the information needed to synthesize a protein or an RNA are genes. Nucleic acids can store and transmit genetic information from one generation to the next, fundamental to any life form.