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Consider the following statements (A)...

Consider the following statements
(A). r-RNA provides the template for synthesis of proteins
(B) tRNA brings amino acids and reads the genetic code
(c ) RNA polymerase binds to promother and initiates transcription
(D) A segment of DNA coding for polypeptide is called intron

A

(A) and (c ) are correct

B

(A) and (B) are correct

C

(A), (B) and ( c ) are correct

D

(B) and ( c) are correct

Text Solution

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The correct Answer is:
d
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Consider the statements (i) rRNA provides template for synthesis of proteins (ii) tRNA brings amino acids and reads genetic code (iii) RNA polymerase binds to promoter and initiates transcription (iv) A segment of DNA coding for polypeptide is called intron

The ( a) provides the template, (b) brings amino acids and reads the genetic code , and (c) play structure and catalytic role during translation.

Assertion : All three ENAs (mRNA, tRNA and rRNA) are needed to synthesise a protein in a cell. Reason : The mRNA provides the template, RNA brings aminoacids and reads the genetic code, and tRNA play structural and catalytic role.

Read the following statements carefully and choose the correct statements. A. In a transcription unit, the promoter located at the 5' end of coding strand B. The single strand DNA having the polarity 5' rarr 3' is the template strand C. RNA polymerase binds to the operator during transcription. D. Single base DNA differences occur in humans are called Single Nucleotide Polymorphism (SNPs).

Consider the following statements w.r.t transcription and select the right choice (i) The promoted is said to located towards the 5' - end of the coding strand. (ii ) The promoted is an RAN sequence that provides a binding site for RNA polymerase. (iii) The terminator is located towards the 3' end of the coding strand. (iv) The strand that has polarity 3'rarr5' acts as a template strand .

Consider the following statements: (a) DNA is a long polymer of ribonucleotides (b) only one strand of DNA acts as a template for the synthesis of a new strand of DNA during replication (c) tRNA is also called adaptor molecule (d) DNA performs both autocatalytic and heterocatalytic functions. Which of the given statements are correct?

Consider the following statements w.r.t. a translational unit in mRNAa. a . UTRs are present after start codon and before stop codons. b. It is the sequence of RNA that is flanked by start codon (AUG) and stop codon. C. It codes for a polypeptide. d. UTRs are needed for efficient translation process.

Read the following statements. (i) One codon codes for only one amino acid. (ii) Some amino acids are coded by more than one codon. (iii) The sequence of triplet nitrogenous bases in DNA of mRNA coresponds to the amino acid sequence in the polypeptide chain. Give , suitabel terms for the characteristics of 'genetic code' as per the above statements.

ERRORLESS -MOLECULAR BASIS OF INHERITANCE-Molecular Basis Of Inheritance
  1. DNA nucleotides are attached by

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  2. During Meselson and Stahl' experiments, heavy DNA was distinguished fr...

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  3. Consider the following statements (A). r-RNA provides the templa...

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  4. Locations or sites in the human DNA where single base DNA differences ...

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  5. Strand X in the figure shows a small partsof a nucleic acid molecule ...

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  6. If the total amount of adenine and thymine in a double- stranded DNA i...

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  7. The 3' -5' phosphodiester linkages a polynucleotide chain serce to joi...

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  8. DNA synthesis during replication is

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  9. Purines have nitrogen atoms at positions.

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  10. DNA is a polymer of Or Which is the ultimate unit of DNA molecule

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  11. DNA gyrase, the enzyme that participates in the process of DNA replica...

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  12. The 5' end of polynucleotide chain is attached to

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  13. Which one of the following palindromic base sequences in DNA can be e...

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  14. DNA or RNA segment tagged with a radioative molecule is called

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  16. The unequivocal proof of DNA as the genetic material came fron the stu...

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  17. Which one of the following also acts as a catalyst in a becterial ce...

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  18. Automated DNA sequencers, work on the peinciple of the method develope...

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  20. In Hershey and Chase experiment, radioactive^(32)P was used to cultur...

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