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Biomolecules question

2024 · 30 Jan · Shift 2 · Q21
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Biomolecules question

2024 · 30 Jan · Shift 2 · Q21

JEE MainChemistryBiomoleculesNumerical+4 / −1
The total number of correct statements, regarding the nucleic acids is ‾\underline{\hspace{2cm}}​. A. RNA is regarded as the reserve of genetic information B. DNA molecule self-duplicates during cell division C. DNA synthesizes proteins in the cell D. The message for the synthesis of particular proteins is present in DNA E. Identical DNA strands are transferred to daughter cells.
Numerical answer
View written solutionFree

Correct answer: 3

  1. Check each statement one by one

    We are asked to count the number of correct statements about nucleic acids.


  1. Statement A: RNA is regarded as the reserve of genetic information

    • In most organisms, DNA is the main storage/reserve of genetic information.
    • RNA mainly helps in protein synthesis, though in some viruses RNA can act as genetic material.
    • As a general statement for nucleic acids in cells, this is incorrect.

    A = False


  1. Statement B: DNA molecule self-duplicates during cell division

    • DNA undergoes replication before cell division.
    • This ensures genetic information is copied.

    B = True


  1. Statement C: DNA synthesizes proteins in the cell

    • DNA does not directly synthesize proteins.
    • Protein synthesis occurs on ribosomes, with the help of RNA.
    • DNA only stores the information and directs synthesis indirectly.

    C = False


  1. Statement D: The message for the synthesis of particular proteins is present in DNA

    • Yes, genes in DNA contain the coded information for making specific proteins.

    D = True


  1. Statement E: Identical DNA strands are transferred to daughter cells

    • During replication and cell division, genetic information is passed on to daughter cells so that they receive identical DNA content (barring mutations).
    • This is the basic role of DNA replication.

    E = True


  1. Count the correct statements

    Correct statements are:

    • B
    • D
    • E

    Total number of correct statements: 333


  1. Compare with stored correct answer

    • Derived answer = 333
    • Stored correct answer = 333

    These match.

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