Chemistry QuestionsBiomolecules Questions for CBSE Class 12th

Biomolecules Questions for CBSE Class 12th

Identify the correct statements?

The number of tripeptides formed by three different amino acids are

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    Some of the pair of monosaccharides are given below: I. Allose, atrose II. Glucose, fructose III. Glucose, mannose IV. Mannose, fructose V. Gulose, indose VI. Galactose, talose VII. Galactose, glucose VIII. Indose, glucose How many of the above pairs are C-2 epimers?

    The structure of a peptide is given below If the absolute values of the net charge of the peptide at pH = 2, pH = 6, and pH = 11 are |Z 1 |,|Z 2 | and |Z 3 |, respectively, then what is |Z 1 |+|Z 2 |+|Z 3 | ?

    The purine bases are

    The two functional groups present in a typical carbohydrate are

    Iso electric point of an amino acid (X) is 6. The p H at which maximum concentration of zwitter ion of (X) present is

    Consider the following sequence for aspartic acid The isoelectronic point ( PI ) of aspartic acid is

    Observe the following reaction and mark the correct statement (s) given below-

    Consider the following reaction: D − glucose c a t . H + P h − N H − N H 2 3 e q u i v ) X Among the following, the compound whose osazone derivative will have the same melting point as that of X is/are

    Which of the following options is/are correct regarding catalytic action?

    Observe the following reaction and mark the correct statement (s) given below

    Which of the following reaction(s), takes place with the evolution of nitrogen gas:

    Which of the following reagents can be used to make distinction between an aldose and a ketose? I. Br 2 water II. Tollen’s reagent III. Fehling’s solution

    The amino acid arginine has the formula Its isoelectric point is 10.76. In a solution of pH=10.76, arginine exist as

    Mutarotation is a characteristic feature of

    Two significant forms which exhibit mutarotation assigned α and β forms. For mannose, the mutarotation can be shown in brief as follows Which form of mannose exists predominantly in the aqueous form ?

    COLUMN – I structure of protein COLUMN – II Characteristic property a. 1° structure p. The structure is a result of the different conformations of polypeptide chain. b. 2° structure q. The structure is determined by any folding of chain in on itself. c. 3° structure r. The structure results when two or more polypeptide chains in some proteins are linked together by weak forces of attraction on their surface groups. d. 4° structure s. The manner and sequence in which various amino acids are joined to form polypeptide.

    The number of chiral carbon in β -D(+) glucose is

    The branched polymers of glucose are

    Total number of possible aldohexoses belonging to D-series is

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