Description : Each haemoglobin molecule contains (A) One iron atom (B) Two iron atoms (C) Four iron atoms (D) Six iron atoms
Last Answer : Answer : C
Description : Iron is stored in the form of (A) Ferritin and transferrin (B) Transferrin and haemosiderin (C) Haemoglobin and myoglobin (D) Ferritin and haemosiderin
Last Answer : Answer : D
Description : About 5% of the total body, iron is present in (A) Transferrin (B) Myoglobin (C) Cytochromes (D) Haemosiderin
Last Answer : Answer : B
Description : (1) they contain free electrons Explanation: Metals typically consist of closepacked atoms, meaning that the atoms are arranged like closely packed spheres. Two packing motifs are common, one ... surrounded by six neighboring atoms. Several metals adopt both structures, depending on the temperature.
Last Answer : Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas
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 : Two hydrogen-like atoms `A` and `B` are of different masses and each atom contains equal numbers of protons and neutrons. The difference in the energi
Last Answer : Two hydrogen-like atoms `A` and `B` are of different masses and each atom contains equal numbers of ... A` imparts. Identify the atom `A and B`.
Description : In biological studies which of the following is used to refer to the oxygen-binding, iron-containing, conjugated protein complex present in the sarcoplasm of muscle cells? a) myelin b) myosin c) myoglobin d) none of these
Last Answer : ANSWER: C -- MYOGLOBIN
Description : In molecule of calcium sulfide calcium has two valence electron bonds and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium?
Last Answer : What is the answer ?
Description : Sigmoidal oxygen dissociation curve is a property of (A) Haemoglobin (B) Carboxyhaemoglobin (C) Myoglobin (D) Methaemoglobin
Last Answer : Answer : A
Description : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in `SF_(6)` prevent the attack of `H_(2)O` on sulphur atom of `SF_
Last Answer : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in ` ... D. Statement-I is not correct and Statement-II is correct
Description : During each cycle of β-oxidation (A) One carbon atom is removed from the carboxyl end of the fatty acid (B) One carbon atom is removed from the methyl end of the fatty acid (C) Two carbon atoms ... carboxyl end of the fatty acid (D) Two carbon atoms are removed from the methyl end of the fatty acid
Description : Which one of the following biomolecules is correctly characterized? (a) Lecithin-a phosphorylated glyceride found in cell membrane. (b) Palmitic acid - an unsaturated fatty acid with 18 carbon atoms. ... Alanine amino acid - contains an amino group and an acidic group anywhere in the molecule.
Last Answer : (a) Lecithin-a phosphorylated glyceride found in cell membrane
Description : Water contains (A) One hydrogen atom and one oxygen atom (B) Two hydrogen atoms and one oxygen atom (C) One hydrogen atom and two oxygen atoms D) Three hydrogen atoms and two oxygen atoms
Last Answer : Answer: Option B
Description : In an oxygen molecule, two atoms are united by - (1) one bond (2) two bonds (3) three bonds (4) four bonds
Last Answer : (2) two bonds Explanation: Two oxygen atoms can both achieve stable structures by sharing two pairs of electrons as in the diagram. Two electrons of each of the atom in the oxygen molecule ... is shown conventionally by two lines joining the atoms. Each line represents one pair of shared electrons.
Description : In an oxygen molecule, two atoms are united by (1) one bond (2) two bonds (3) three bonds (4) four bonds
Last Answer : two bonds
Description : In methane molecule how are the four hydrogen atoms arranged? -Do You Know?
Last Answer : answer:
Description : In methane molecule how are the four hydrogen atoms arranged?
Last Answer : As tetrahedral
Description : 1. What is the age of retirement of the Judges of the High Court? 2. In methane molecule how are the four hydrogen atoms arranged? 3. Which industry earns the second highest net foreign exchange ... the climate of India is? 20. Under which act was the Supreme Court in British India established?
Last Answer : CITES (Convention on International Trade in Endangered Species)
Description : Fatty acids with odd number of carbon atoms yield acetyl-CoA and a molecule of (A) Succinyl-CoA (B) Propionyl-CoA (C) Malonyl-CoA (D) Acetoacetyl-CoA
Description : Cholesterol molecule has _______ carbon atoms. (A) 27 (B) 21 (C) 15 (D) 12
Description : Apart from tetrahedral geometry another possible geometry for CH4 is square planar with four hydrogen atoms at the corners of the square and the carbon atom at the centre.Explain why CH4 is not square planar?
Last Answer : Ans For square planar arrangement hybridization is dsp2 which is not possible with Carbon as it does not have d orbital with it
Description : Apart from tertrahedral geometry ,another possible geometry for CH4 is square planar with the four H atoms at the corners of square and C atom at its centre. Explain why CH4 is not square planar.
Last Answer : Ans. In square planar geometry , the bond angle will be 90 ° which is less than bond angle in tetrahedral geometry ( 109.5 °).Therefore repulsive forces in square planar will be more and it will be less stable as compared to tetrahedral geometry.
Description : How many atoms per unit cell are in a face-centered-cubic crystal? w) two x) four y) six z) eight
Last Answer : ANSWER: X -- FOUR
Description : For de novo synthesis of purine nucleotides, glycine provides (A) One nitrogen atom (B) One nitrogen and one carbon atom (C) Two carbon atoms (D) One nitrogen and two carbon atoms
Description : What is Myoglobin ?
Last Answer : Myoglobin is a type of protein linked by iron and oxygen. It is most commonly found in the fleshy muscle cells of vertebrates. It is related to hemoglobin.
Description : Myoglobin is present in
Last Answer : Myoglobin is present in A. White muscle fibers B. Red muscle fibers C. Involuntary muscles D. All the above
Description : The red colour of human blood is due to (1) myoglobin (2) hemoglobin (3) immunoglobulin (4) haptoglobin
Last Answer : (2) hemoglobin Explanation: Hemoglobin is the ironcontaining oxygen-transport metalloprotein in the red blood cells of all vertebrates which carries oxygen from the respiratory organs to the rest of the body. It ... oxygen than had in the vein the blood' came from. Therefore, the blood turns red.
Description : Mitotic spindle is mainly composed of which protein? (a) Actin (b) Myosin (c) Actomyosin (d) Myoglobin
Last Answer : c) Actomyosin
Description : Mast cells secrete (a) haemoglobin (b) hippurin (c) myoglobin (d) histamine
Last Answer : (d) histamine.
Description : Both Haemoglobin and myoglobin require _______ for formation —
Last Answer : Iron
Description : The following protein/polypeptide has a quaternary structure : (A) cc-Chymotrypsin (B) Hemoglobin (C) Insulin (D) Myoglobin
Last Answer : (B) Hemoglobin
Last Answer : hemoglobin
Description : Are used to denote the of atoms of each in the molecule?
Last Answer : Chemical symbols and coefficients are used.
Description : An unknown amino acid has `0.32%` sulphur by mass . If each molecule has one sulphur atom only 1 g of amino acid has . . . . . . . Molecules :-
Last Answer : An unknown amino acid has `0.32%` sulphur by mass . If each molecule has one sulphur atom only 1 g of amino ... C. `6.02xx10^(24)` D. `6.02xx10^(23`
Description : Is used to indicate the numbers of each type of atom in the naming of a covalent molecule?
Last Answer : Prefixes are used.
Description : What is the radius of an imaginary shell around an atom which determines how close two nonbonded atoms may approach each other called?
Last Answer : ANSWER: VAN DER WAALS RADIUS
Description : An immunoglobulin molecule always contains (A) 1 κ and 3 λ type of chains (B) 2 κ and 2 λ type of chains (C) 3 κ and 1λ type of chains (D) 2 κ and 2 λ chains
Description : The molecule of vitamin A1 contains (A) Benzene ring (B) β-Ionone ring (C) β-Carotene ring (D) None of these
Description : Prostaglandins have a common structure based on prostanoic acid which contains carbon atoms: (A) 12 (B) 16 (C) 18 (D) 20
Description : Besides the pancreatic juice in the intestine there is the releasing of the enteric juice that contains digestive enzymes too. What are these enzymes and which type of molecule do each of these enzymes break?
Last Answer : The enteric juice is secreted by the small intestine mucosa. The enzymes of the enteric juice and their respective functions are described as follows: Enterokinase: enzyme that activates ... Enzymes that break nucleotides into its components (nitrogen-containing bases, phosphates and pentoses).
Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine
Description : What's the saying about "each breath you take contains an atom of Ceasar's last breath"?
Last Answer : Could be, but I doubt it is actually provable.
Description : In the back yard, there is a hollow stump, that contains six ears of corn. If a healthy squirrel carries out only three ears each day, how many days will it take to empty the stump? -Riddles
Last Answer : Six. Each day the squirrel will carry out the two ears on his head plus one ear of corn.
Description : In which Molecule the distance between two adjacent carbon atoms is longest? -Do You Know?
Description : In which Molecule the distance between two adjacent carbon atoms is longest?
Last Answer : Ethane
Description : How does dissolving a salt molecule in water make its atoms ionize? -Space
Last Answer : When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules. Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together.
Description : How many atoms are in a molecule of nitric acid ?
Last Answer : Nitric acid has 5 atoms in one molecule.
Description : How many chlorine atoms are present in chlorine molecule ?
Last Answer : There are two chlorine atoms in the chlorine molecule.
Description : How many atoms are in the molecule of inert gas ?
Last Answer : Inert gas has 1 atom in its molecule .