Description : Glutathione is a (A) Dipeptide (B) Tripeptide (C) Polypeptide (D) None of these
Last Answer : Answer : B
Description : The end product of protein digestion in G.I.T. is (A) Dipeptide (B) Tripeptide (C) Polypeptide (D) Amino acid
Last Answer : Answer : D
Description : Thyrotropin releasing hormone is a (A) Dipeptide (B) Tripeptide (C) Octapeptide (D) Decapeptide
Description : Globular proteins have completely folded, coiled polypeptide chain and the axial ratio (ratio of length to breadth) is (A) Less than 10 and generally not greater than 3–4 (B) Generally 10 (C) Greater than 10 and generally 20 (D) Greater than 10
Last Answer : Answer : A
Description : Which of the following is the quaternary structure of proteins concerned with? (a) sequence of amino acids in the peptide chain (b) description of the way the peptide chains are arranged with ... (c) location of the disulfide bridges in the peptide chain (d) conformation of the protein backbone
Last Answer : description of the way the peptide chains are arranged with respect to each other
Description : Denaturation of proteins involves breakdown of (A) Secondary structure(B) Tertiary structure (C) Quarternary structure(D) All of these
Description : The hydrogen bonds in the secondary and tertiary structure of proteins are directly attacked by (A) Salts (B) Alkalies (C) Detergents (D) All of these
Description : During denaturation of proteins, all of the following are disrupted except (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Description : In proteins the α-helix and β-pleated sheet are examples of (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Description : Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains
Last Answer : Answer : C
Description : Human growth hormone has (A) One polypeptide chain and one intra-chain disulphide bond (B) One polypeptide chain and two intra-chain disulphide bond (C) Two polypeptide chains joined by one disulphide bond (D) Two polypeptide chains joined by two disulphide bond
Description : Insulin is oxidized to separate the protein molecule into its constituent polypeptide chains without affecting the other part of the molecule by the use of (A) Performic acid (B) Oxalic acid (C) Citric acid (D) Malic acid
Description : Isoenzymes for a given reaction (A) Have different spedificities (B) Have identical affinities for the same substrate (C) Exhibit different electrophoretic motilities (D) Contain similar ratios of different polypeptide chains
Description : The minimum number of polypeptide chains in an immunoglobulin is (A) Two (B) Four (C) Five (D) Six
Description : Cones are prepared from Options: 1) Milk Sugar 2) Mixture of Glucose and distilled water 3) Mixture of Cane Sugar and Egg albumin 4) Dextrose
Last Answer : Correct Answer: 3) Mixture of Cane Sugar and Egg albumin
Description : According to widely accepted fluid mosaic model cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several ... domains of the membrane. (d) Many proteins remain completely embedded within the lipid bilayer.
Last Answer : (b) Proteins can also undergo flip-flop movements in the lipid bilayer.
Description : Which of the following protein structures does “denaturation” destroy? (a) primary and secondary structures (b) secondary and tertiary structures (c) tertiary and quaternary structures (d) secondary, tertiary, and quaternary structures
Last Answer : secondary, tertiary, and quaternary structures
Description : Which of the following structures can polypeptides have? (a) primary structure (b) secondary structure (c) tertiary structure (d) all of the these
Last Answer : all of the these
Description : The linear arrangement of amino acid units in proteins is called : (a) primary structure (b) secondary structure (c) tertiary structure (d) quaternary structure
Last Answer : primary structure
Description : Assertion `:` Most of the human haemoglobin in our body has `2 alph` and `2 beta` polypeptide chains. Reason `:` Haemoglobin is a conjugate protein an
Last Answer : Assertion `:` Most of the human haemoglobin in our body has `2 alph` and `2 beta` polypeptide ... False. D. If both Assertion & Reason are false.
Description : The number of polypeptide chains present in a molecule of haemoglobin is/are
Last Answer : The number of polypeptide chains present in a molecule of haemoglobin is/are A. 1 B. 3 C. 4 D. 2
Description : Hemoglobin is a molecule made of four polypeptide chains, each bound to a iron-containing molecular group called a heme group. So the molecule contains four polypeptide chains and four ... depends upon the integrity of its quaternary structure. Blood Questions - Image Diversity: hemoglobin molecule
Last Answer : On average what is the life duration of the red blood cells?
Description : The following are true about the sodium channels: a. they are made up of polypeptide chains b. have the highest densities at the nodes of Ranvier c. open in response to depolarization d. remain open as long as depolarization is maintained
Last Answer : have the highest densities at the nodes of Ranvier
Description : The primary structure of a protein refers to : (a) whether the protein is fibrous or globular (b) the amino acid sequence in the polypeptide chain (c) the orientation of the amino acid side chains in space (d) the presence or absence of an α-helix
Last Answer : the amino acid sequence in the polypeptide chain
Description : Each antibody molecule is made up of how many PAIR of polypeptide chains, joined together by disulfide bonds. a) 1 b) 2 c) 3 d) 4
Last Answer : ANSWER: B -- 2
Description : The egg injury factor in raw egg white is (A) Biotin (B) Avidin (C) Albumin (D) Calcium salts
Description : A phosphoprotein present in egg is (A) Casein (B) Albumin (C) Ovoglobulin (D) Ovovitellin
Description : Which are the forces that maintain the second- ary, tertiary and quaternary structures of a pro- tein?
Last Answer : Hydrogen bonds, Electrostatic bonds, Van der Waalís forces and Hydrophobic bonds.
Description : Which of the following is a dipeptide? (A) Anserine (B) Glutathione (C) Glucagon (D) β -Lipoprotein
Description : What is a dipeptide?
Last Answer : Two amino acids are combined to form a dipep- tide
Description : A decrease in albumin with increased production of other unidentified proteins which migrate in β, γ region suggests (A) Cirrhosis of liver (B) Nephrotic syndrome (C) Infection (D) Chronic lymphatic leukemia
Description : In the total proteins, the percentage of albumin is about (A) 20–40 (B) 30–45 (C) 50–70 (D) 80–90
Description : In which two states are the particles arranged randomly?
Last Answer : liquid and solid
Description : The following are true about the cornea: a. the stroma contains collagen fibrils of regular thickness b. the Bowman's layer contains randomly arranged collagen fibrils c. the Bowman's layer is the ... layer of the epithelium d. type I collagen is the main type of collagen found in the cornea
Last Answer : type I collagen is the main type of collagen found in the cornea
Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells
Last Answer : d) Egg cell and antipodal cells
Description : Met-enkephalin is a (A) Tripeptide (B) Pentapeptide (C) Octapeptide (D) Decapeptide
Description : In glutathione (a tripeptide) is present apart from Glutamic acid and cysteine: (A) Serine (B) Glycine (C) Leucine (D) Phenyl alanine
Description : A coagulated protein is (A) Insoluble (B) Biologically non-functional (C) Unfolded (D) All of the above
Description : A tripeptide functioning as an important reducing agent in the tissues is (A) Bradykinin (B) Kallidin (C) Tyrocidin (D) Glutathione
Description : Which of the following is a tripeptide? (A) Anserine (B) Oxytocin (C) Glutathione (D) Kallidin
Description : The Brahmaputra, Irrawady and Mekong rivers originate in Tibet and flow through narrow and parallel mountain ranges in their upper reaches: Of these rivers, Brahmaputra makes a "U" turn in its course to ... Geo-tectonic disturbance in the tertiary folded mountain chains (d) Both (a) and (b) above
Last Answer : Ans: (d)
Description : Bence-Jones proteins possess all the following properties except (A) They are dimers of light chains (B) Their amino acids sequences are identical (C) Their N-terminal halves have variable amino acid sequences (D) Their C-terminal halves have constant amino acid sequences
Description : Tertiary structure of a protein describes (A) The order of amino acids (B) Location of disulphide bonds (C) Loop regions of proteins (D) The ways of protein folding
Description : In protein structure the α-helix and βpleated sheets are example of (A) Primary structure (B) Secondary structure (C) Tertiary structure (D) Quaternary structure
Description : Protein present in hemoglobin has the structure known as (A) Primary (B) Secondary (C) Tertiary (D) Quarternary
Description : If a metallic object is heated, its density generally: w) increases x) decreases y) fluctuates randomly z) remains the same
Last Answer : ANSWER: X -- DECREASES
Description : The most appropriate method of making egg-albumin sol is :
Last Answer : The most appropriate method of making egg-albumin sol is : A. Keep the egg in boiling water for 10 ... of `5%` w/V saline solution and stir well.
Description : How do you compare sulphur content in albumin and egg yolk?
Last Answer : What is the answer ?
Description : An egg sinks in soft water but floats in a concentrated solution of salt because – (1) Egg absorbs salt from the solution and expands (2) Albumin dissolves in salt solution and egg becomes lighter (3) The density of salt solution exceeds the density of eggs (4) Water has high surface tension
Last Answer : (3) The density of salt solution exceeds the density of eggs Explanation: Following the density principle, the density of the egg compared to the density of the tap water is lesser (the density principle ... and that is why an egg sinks in soft water but floats in a concentrated solution of salt.