Read the Assertion and Reason carefully to mark the correct option out of the options given below:
If both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.
(b) If both the Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) If the Assertion is true but the Reason is false.
(d) If both the Assertion and Reason are false Question 1. Assertion :Transcription is the mode in which DNA passes its genetic information to RNA. Reason : Transcription takes place in the cytoplasm of eukaryotic cells.
Question 2. Assertion: Viruses having shorter life span, mutate and evolve faster. Reason: Viruses have generally RNA genome.
Question 3. Assertion : The RNA molecules are essential for cell function in both prokaryotes and eukaryotes. Reason : They play an important role in protein synthesis.
Question 4. Assertion: The genetic codes are commaless. Reason: Genetic codes are overlapping.
Question 5. Assertion :'Split genes' concept is applicable only to the prokaryotes. Reason : Prokaryotic genome is divided into exons and introns.
Question 6. Assertion: DNA caused the transformation. Reason: Digestion with DNase inhibits transformation.
Question 7. Assertion :The hnRNA in humans has exons and introns. Reason : The primary transcript produced in eukaryotes is translated without undergoing any modification or processing.
Question 8. Assertion :The two strands of DNA are antiparallel .
Reason : Only antiparallel polynucleotides form a stable double helix.
Question 9. Assertion: RNA was the first genetic material. Reason: Essential life processes (such as metabolism, translation, splicing, etc.) evolve around RNA.
Question 10. Assertion :DNA fingerprinting is also known as genetic fingerprinting. Reason : It was developed by James Watson, the first director of human genome project.
Question 11. Assertion :A single mRNA strand is capable to produce different polypeptide chains. Reason : The mRNA strand has terminator codons.
Question 12. Assertion: Enzymes required for DNA replication are efficient enzymes Reason: They can polymerise large number of nucleotides in very short time
Question 13. Assertion :Ribosomal RNA is synthesized in the cytoplasm of the cell. Reason : It is translated with the enzyme RNA polymerase III.
Question 14. Assertion : Z-DNA follows a zig-zag course. Reason : Z-DNA is left handed.
Question 15. Assertion : The operon is a unit of gene expression. Reason : Lac operon in E. coli is an inducible control.