Why peptide bond is planar? -Biology

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Description : Which of the following statement about the peptide bond is true? (A) It is a carbon-carbon bond (B) It has cis hydrogen and oxygen groups (C) It is planar (D) It has rotational freedom

Last Answer : Answer : B

Description : Which statement about the structure of benzene is not true? (a) The two Kekule structures of benzene are in equilibrium. (b) The carbon-carbon bond lengths in benzene are greater than the carbon- ... (d) The stability of benzene ring is much greater than the stability of 1,3,5- cycloheptatriene

Last Answer : The two Kekule structures of benzene are in equilibrium

Description : Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°. (b) It is immiscible with water forming the lower layer. (c) It can be ... Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene.

Last Answer : It is immiscible with water forming the lower layer

Description : Which of the following statements about benzene is correct? (a) All of the carbon atoms are sp3 hybridized. (b) It has no delocalized electrons. (c) The carbon-carbon bond length is longer than that of ethane. (d) It is a planar molecule.

Last Answer : It is a planar molecule.

Description : What is the predicted shape, bond angle, and hybridization for CH3+? (a) trigonal planar, 120°, sp2 (b) trigonal planar, 120°, sp3 (c) trigonal planar, 109.5°, sp2 (d) trigonal pyramidal, 120°, sp2

Last Answer : trigonal planar, 120°, sp2

Description : The triple bond between the carbon atoms causes acetylene, C2H2, to have which of the following shapes? w) trigonal planar (pron: try-gon-al) x) linear y) tetrahedral z) trigonal bipyramidal

Last Answer : ANSWER: X -- LINEAR

Description : What is the peptide bond that connects amino acids in proteins? -Biology

Last Answer : answer:

Description : What is lost from amino acids in the formation of a peptide bond? -Biology

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Description : What two elements are connected in a peptide bond of 2 amino acids? -Biology

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Description : What is a peptide bond? -Biology

Last Answer : answer:

Description : Assertion `:` Removal of gall bladder does affect the protein digestion. Reason `:` Bile juice break the peptide bond.

Last Answer : Assertion `:` Removal of gall bladder does affect the protein digestion. Reason `:` Bile juice break ... . D. If both Assertion & Reason are false.

Description : Assertion `:` Pancreatic amylase digest protein to amino acid. Reason `:` Pancreatic amylase breaks the peptide bond of protein.

Last Answer : Assertion `:` Pancreatic amylase digest protein to amino acid. Reason `:` Pancreatic amylase breaks the ... D. If both Assertion & Reason are false.

Description : Which antibiotic inhibits peptide bond formation

Last Answer : Which antibiotic inhibits peptide bond formation A. Streptomycin B. Tetracycline C. Chloramphenicol D. Neomycin

Description : Peptide bond is a key feature in:

Last Answer : Peptide bond is a key feature in: A. polysaccharide B. Proteins C. Nucleotide D. Vitamins

Description : What kind of a reaction forms a peptide bond?

Last Answer : dehydration synthesis

Description : The formation of a peptide bond during the elongation step of protein synthesis results in the splitting of how many high energy bonds? (A) 1 (B) 2 (C) 3 (D) 4

Last Answer : Answer : B

Description : After formation of a peptide bond, mRNA is translocated along the ribosome by (A) eEF-1 and GTP (B) eEF-2 and GTP (C) Peptidyl transferase and GTP (D) Peptidyl transferase and ATP

Last Answer : Answer : B

Description : Which bond is present in the primary structure of protein? (A) Ester (B) Hydrogen (C) Ionic bond (D) Peptide

Last Answer : Answer : D

Description : A protein reacts with biuret reagent which indicates 2 or more (A) Blood clotting (B) Peptide bond (C) Disulphide bonds (D) Hydrophobic bonds

Last Answer : Answer : B

Description : In denaturation of proteins, the bond which is not broken: (A) Disulphide bond (B) Peptide bond (C) Hydrogen bond (D) Ionic bond

Last Answer : Answer : B

Description : The bond in proteins that is not broken under usual conditions of denaturation: (A) Hydrophobic bond (B) Hydrogen bond (C) Disulphide bond (D) Peptide bonds

Last Answer : Answer : D

Description : From two amino acids peptide bond formation involves removal of one molecule of (A) Water (B) Ammonia (C) Carbondioxide (D) Carboxylic acid

Last Answer : Answer : A

Description : The bond in proteins that is not hydrolysed under usual conditions of denaturation: (A) Hydrophobic bond (B) Hydrogen bond (C) Disulphide bond (D) Peptide bonds

Last Answer : Answer : C

Description : Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine

Last Answer : Answer : B

Description : Which of the following statement(s) is/are true concerning translation of the mRNA message to protein synthesis? a. An adaptor molecule, tRNA, recognizes specific nucleic acid bases and unites them ... and the free amino acid occurs in the free cytoplasm d. Complete protein synthesis takes hours

Last Answer : Answer: a, b The synthesis of protein involves conversion from a four-letter nucleotide language to one of 20 chemically distinct amino acids. This process is referred to as ... translation and be moving down the mRNA molecules simultaneously, thus increasing the rate of protein synthesis

Description : The covalent bond that is repeatedly present between different amino acid residues in a protein is called (a) p-bond (b) hydrogen bond (c) peptide bond (d) metallic bond

Last Answer : Ans:(c)

Description : Which method of protein estimation is depen- dent on the intact peptide bond?

Last Answer : Biuret method.

Description : What are the salient features of a peptide bond?

Last Answer : The peptide bond is a partial double bond. The C-N bond is ëtransí in nature and there is no free- dom of rotation because of the partial double bond character.

Description : What is a peptide bond?

Last Answer : Alpha carboxyl group of one amino acid reacts with alpha amino group of another amino acid to form a peptide bond or CO-NH bridge 

Description : The bond between sugar and nitrogenous base in case of DNA is known as (a) Gycosidic bond (b) Phosphodiester bond (c) H-bond (d) Peptide bond

Last Answer : (a) Gycosidic bond

Description : Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Last Answer : (d) Inulin, insulin

Description : Glycine is a unique amino acid because it (a) has no chiral carbon (b) has a sulfur containing R group (c) cannot form a peptide bond (d) is an essential amino acid

Last Answer : has no chiral carbon

Description : Which binding is inhibited by pactamycin? A- Aminoacyl-tRNA to the A-site of 30S subunit B- Initiator-tRNA to 30S/40S initiation complexes C- Peptidyl t-RNA to the 50S subunit D- Formation of peptide bond in P site

Last Answer : Initiator-tRNA to 30S/40S initiation complexes

Description : Chloramphenicol inhibits bacterial protein synthesis by: A. Binding to 30S ribosome and inhibiting attachment of aminoacyl tRNA B. Binding to 50S ribosome and preventing peptide bond formation C. Binding to ... chain D. Binding to both 30S and 50S ribosome and inducing misreading of mRNA code

Last Answer : B. Binding to 50S ribosome and preventing peptide bond formation

Description : Maximum no. of atonms laying in a same planar in `B_(2)H_(6)` are :-

Last Answer : Maximum no. of atonms laying in a same planar in `B_(2)H_(6)` are :- A. 8 B. 4 C. 6 D. 2

Description : Which of the following molecule is planar as well as polar :

Last Answer : Which of the following molecule is planar as well as polar : A. `PCl_(3)` B. `SF_(4)` C. `ClF_(3)` D. None of these

Description : A coordination complex of type `MX_(2)Y_(2)`[M=metal ion, X,Y=monodentata ligands ], can have either a tetrahedral of a square planar geometry. The ma

Last Answer : A coordination complex of type `MX_(2)Y_(2)`[M=metal ion, X,Y=monodentata ligands ], can have either a tetrahedral ... 2 and 1 C. 1 and 3 D. 3 and 2

Description : The total number of possible isomers of sqaure-planar `[Pt(Cl)(NO_(2))(NO_(3))(SCN)]^(2-)` is :

Last Answer : The total number of possible isomers of sqaure-planar `[Pt(Cl)(NO_(2))(NO_(3))(SCN)]^(2-)` is : A. 8 B. 12 C. 16 D. 24

Description : The number of geometric isomers that can exist for square planar `[Pt(Cl)(py)(NH_(3))(NH_(2)OH)]^(+)` is (py=pyridine)

Last Answer : The number of geometric isomers that can exist for square planar `[Pt(Cl)(py)(NH_(3))(NH_(2)OH)]^(+)` is (py=pyridine) A. 2 B. 3 C. 4 D. 6

Description : Which one of the following has a square planar geometry? `(Co=27, Ni=28, Fe=26, Pt=78)`

Last Answer : Which one of the following has a square planar geometry? `(Co=27, Ni=28, Fe=26, Pt=78)` A. `[NiCl_(4)]^(2-) ... `[CoCl_(4)]^(2-)` D. `[FeCl_(4)]^(2-)`

Description : The number of geometrical isomers for octahedral `[CoCl_(4)(NH_(3))_(2)]^(-)`, square planar `[AuBr_(2)Cl_(2)]^(-)` and `[PtCl_(2)(en)]` are

Last Answer : The number of geometrical isomers for octahedral `[CoCl_(4)(NH_(3))_(2)]^(-)`, square planar `[AuBr_(2)Cl_(2)]^(-) ... are A. 4,2 B. 2,2 C. 3,2 D. 2,3

Description : Cis-trans isomerism is found in square planar complexes of molecular formula: (a and b are monodentate ligands)

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Description : Match the following. `{:("List-I","List-II"),((A) XeF_(4),(1) "Distorted octahedral"),((B)XeF_(6),(2) "Tetrahedral"),((C )XeO_(3),(3)"Square planar"),

Last Answer : Match the following. `{:("List-I","List-II"),((A) XeF_(4),(1) "Distorted octahedral"),((B)XeF_(6),(2) "Tetrahedral" ... ` D. `{:(A,B,C,D),(2,4,1,3):}`

Description : Which of the following is planar ?

Last Answer : Which of the following is planar ? A. `XeO_(2)F_(2)` B. `XeO_(3)` C. `XeO_(4)` D. `XeF_(4)`

Description : `XeF_(4)` is a square planar molecule. The hybridisation of xenon atom in this molecule is

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Description : Number of planar atoms in `SF_(6)` is

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Description : A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the uniform magnetic field `B= 0.2hati T` such that its direc

Last Answer : A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the ... energy of the coil in the given orientation is

Description : Which molecule or ion has a trigonal planar shape?

Last Answer : So3

Description : Which of the following statement is correct about membrane cholesterol? (A) The hydroxyl group is located near the centre of the lipid layer (B) Most of the cholesterol is in the form ... forms a rigid, planar structure (D) The hydrocarbon chain of cholesterol projects into the extracellular fluid

Last Answer : C

Description : The shape of a carbon molecule is (a) Linear (b) Planar (c) Cubical (d) Tetrahedral

Last Answer : Ans:(d)