to n the nest tour questons semin ad E) D) line B) The represents tryplephan, an
ID: 196610 • Letter: T
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to n the nest tour questons semin ad E) D) line B) The represents tryplephan, an aromatic amino aoid 36 This leter represents lysine, which has three Kvas(2.18, 8.95, and 10.53) in aqueous solution. When forming a part of a protein, only is steral R group can be deprotionated or 37 The imno acid proline is designased hene with te 38. This leer a a protel, the sequence (or onder of its compenent amino acids (acually amino acyl residues) is called represents gulamic acid. Whn tree in solution, it has three pKavalues (2.19,9.87, and 4.25 8H C) tertiary structure ) None of the above amuo a CLeucine One E) 0. This amino acid is not be commonly found in a p-pleat 46. The hemoglobin tetramer (2HDAV2HDB) is said to have quatemary structure. 47. These anino acids would contribule to forming bridge saits in protein secondary and tartiary structures A) Alanine B) Typtophan Isoleucins A) True B) Fahe A) Arpinine, Lysine, Glutamic Acid, Aspertic Aci B) Methionine. C) Serine, Threonine D) Tryplophan, Tyrosine, Phenylaianine E) None of the above 48. The study of chemical neactions in cells is useful in the sludy of metabolism. What is metabolism? A) All reactons in he celis or an organism that produce energy 8) All biosynthetic (anaboilc) reactions in a cel C) Reactions taking place in the organeles of eukaryoie cels D) The sum of all biochemical reactions hat take place in cels, Issurs, organs, or whole organisms E) Those roactions in the cell in which macromolecules are digested to their monomer components 49. A call exchanges mater and energy with the environment, which is one of the characteristics of living organisms From a thermodyname perspechve, ace" is." A) an open system. B) subject to the laws of thermodynamics: Frst, energy is neither created nor destroyed, and second, overy onergy transler increases the entropy (disonder) of the universe 0) apate of asomgebe teg.khi r chei th rment nd reiane heat and wiaste All of the above. None of the above.Explanation / Answer
1. Tryptophan is abbreviated as Trp which contains an -amino group, an -carboxylic acid group, and a side chain with indole ring. This amino acid contains the aeromatic ring which is known as indole ring .This is a non-polar amino acid which is essential for the human beings.
Hence, Letter B represents the tryptophan.
2. Letter A represents the lysine because lysine has an -amino group which generally found as prorogated form in natural conditions, an -carboxylic acid group which is generally found as deprotonated form in natural conditions, and the side chain of lysine is lysyl which charged at physiological pH. The lysine is an aliphatic amino acid. It is also an essential amino acid in humans.
3. Letter D represents the proline because proline has an -amino group which generally found as prorogated form in natural conditions, an -carboxylic acid group which is generally found as deprotonated form in natural conditions, and the side chain of proline is pyrrlidine which is a non-polar at physiological pH.
4. Option A is right because the sequence of amino acid in the polypeptide chain held by the peptide bonds. The one end of the polypeptide chain is called as C-terminus or carboxy terminus and another is N-terminus or amino terminus.
5. Beta sheets prefer amino acids like Tryptophan, isoleucine, valine whereas the alpha helix prefer amino acids like Leucine, lysine, methionine, phenylalanine, arginine, Histidine, glutamate etc.
Hence, Letter A- alanine and C Leucine is not found in beta plates.
6. True because hemoglobin is a globular protein which is a tetramer of two dimers. These two dimers are fully functional after the formation of the quaternary structure. The dimers in the quaternary structure bind with the oxygen and transport the oxygen in the blood.
7. The salt bridge are arises from the two sites one is the anionic carboxylate of the amino acids like aspartate (aspartic acid) or glutamate (glutamic acids) and another is the cationic ammonium of the amino acids like lysine or arginine. The other amino acid residues which have ionizable side chains also participate in the salt bridge formation like Histidine, serine and tyrosine.
Hence, option A- arginine, lysine, glutamic acid and aspartic acid is right
8. The reaction which is occurs in the living cell and maintains the life of the living beings is known as metabolism. These reactions involve the conversion of food/ fuel molecules into the energy.
Hence, option A- all reactions in the cell or organism that produce energy is right
9. Option D- All of the above. Transfer of energy in the living system occurs as the open system and the thermodynamic first law tells that energy is not created nor destroyed and the second law says that the transfer of energy increase the entropy of the system. Option C is also occurs.
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