Chromosome and DNA — Biology MCQs (Class 12)
Free chapter-wise Biology MCQs with answers for MDCAT, FSc and entry tests.
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#17 An anti condon which is complementary to codon is a part of
A) DNA
B) mRNA
C) r RNA
D) t RNA
#18 Which pyrimidine is found in both DNA and RNA?
A) Cytosine
B) Thymine
C) Uracil
D) Guanine
#19 Which one of the following base is not present in Plasmid?
A) Adenine
B) Guanine
C) Cytosine
D) Uracil
#20 Which one of the following is not a stop condon?
A) UAA
B) UAG
C) UGA
D) UGG
#21 A molecule of t RNA has the anticondon sequence UAC. What will be the corresponding nucleotide sequence in the DNA>
A) ATG
B) AUG
C) TAC
D) TUG
#22 What is the advantage of DNA having complementary strands?
A) Pairing can occur
B) Transcription and replication possible
C) Semiconservative replication is possible
D) None of these
#23 Adenine comprised 36% of the nitrogenous base in the DNA of a cell, what is the %age of guanine in the DNA?
A) 14%
B) 18%
C) 28%
D) 64%
#24 Which of the following is found in both DNA and RNA?
A) Double helix
B) Ribose
C) Sugar-phosphate chain
D) Thymine
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