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[A]: DNA code is copied in the synthesis...

[A]: DNA code is copied in the synthesis of tRNA.
[R]: tRNA moves out of the nucleus and after attaching on ribosomes form the template

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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The correct Answer is:
D
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In the protein synthesis, tRNA carrying the amino acid enters from which site of ribosome?

Assertion (A) : Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) : m-RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

[A] : In cell cycle , most of the ordered sequence of phases occur during I phase . [R] : Synthesis of mRNA , tRNA and ribosomal RNA occurs is G_(1) and replication of DNA of S phase .

A 3' ______________ 5' B C 5' _______________ 3'D AB and CD represent two strands of a DNA molecule. When this molecule undergoes replication, forming a replication fork between A and C in the above. (i) Name the template strands for replication. (ii) Using which strand as the template, will there be continuous synthesis of a complementary DNA strand? (iii) Complementary to which strand will Okazaki segments get synthesised and discontinuous synthesis will occur? (iv) What are template strands and Okazaki pieces? (v) In which direction is a new strand synthesized?

Match the columns and bring out correct option of inhibitor and its effect {:(,"Column I",,"ColumnII"),(a,"Chloramphenicol",p,"inhibits binding of tRNA to ribosome"),(b,"Erthromycin",q,"inhibits interaction between tRNA and mRNA"),(c,"Neomycin",r,"Inhibits initia-tion of translation "),(d,"Streptomycin",s,"Inhibits peptidyl transferase activity"),(e,"Tetracycline",t,"Inhibits translocation of mRNA over ribosome"):}

Differentiate between the followings: (a) Repetitive DNA and Satellite DNA (b) mRNA and tRNA (c) Template strand and Coding strand

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. Consider the following statements : Assertion (A) : Amber codon is a...

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  2. [A): DNA replicates after mitosis. [R]: In mitosis, the chromosomal...

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  3. [A]: DNA code is copied in the synthesis of tRNA. [R]: tRNA moves o...

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  4. [A]: DNA is associated with proteins. [R]: DNA wound around histone ...

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  5. [A]: Translocation involves transfer of genetic material between homol...

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  6. Assertion : Left-handed DNA is known as B-DNA. Reason : Right - han...

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  7. [A]: Meselson and Stahl tested the Watson and Crick Theory of DNA repl...

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  8. Assertion (A) : Adenine cannot pair with cytosine. Reason ® : Becaus...

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  9. Assertion : DNA is associated with proteins. Reason : DNA binds aro...

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  10. Assertion. The genetic code is degenerate. Reason. Most amino acids ...

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  11. Assertion: A non-overlapping code means that a base in mRNA is not us...

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  12. [A]: Recombinant DNA contains DNA from two or more sources. [R]: Pl...

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  13. [A]: Genetic engineering is the use of tech- nology to alter the genom...

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  14. [A]: The Lac operon is an example of inducible system. [R]: When Lac...

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  15. [A]: Vectors carry only the foreign DNA/gene into the host cell. [R]...

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  16. [A]: The series of enzyme controlled reactions determine traits in an ...

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  17. [A]: Raphanobrassica is an excellent example of allotertraploidy. [...

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  18. [A]: Plasmids are double .stranded extra chromosomal DNA. [R]: Plas...

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  19. Assertion : Adenine cannot pair with cytosine. Reason : Because ther...

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  20. [A]: The base ratio (A+T )/(G+C) is constant in a particular organism....

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