Challenge your molecular biology knowledge with this 20-question quiz. Genetics MCQs MDCAT Quiz Covers DNA double helix structure, Okazaki fragments, genetic code degeneracy, mutations, and eukaryotic translation. Let us start with the online Molecular Biology Genetics MCQS MDCAT Quiz Preparation Quiz now
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#1. What would happen if, in a gene encoding a polypeptide of 50 amino acids, the 25th codon UAU is mutated to UAA?
#2. The DNA molecule had a shape of a helix with a diameter of
#3. In RNA, thiamine is replaced by
#4. The biological process shown in the diagram is
#5. The number of triplet codons having all three bases the same in 64 triplet codons is
#6. Each amino acid in a protein is specified by
#7. The diameter of the DNA double helix remains constant because of
#8. In a nucleotide having a cytosine base and linked to sugar by a glycosidic bond at carbon number
#9. The codons which code for the same amino acid are called
#10. Length of Okazaki fragments in eukaryotes is a bout
#11. Which of the following is correct regarding the genetic code
#12. Which of the following RNAs picks up a specific amino acid from the amino acid pool in the cytoplasm to the ribosome during protein synthesis
#13. UGA codon in mitochondria reads
#14. The two polynucleotide chains in DNA are
#15. If the DNA in all of the cells of an adult human were lined up end to end, it would stretch nearly
#16. The new strand synthesized in small pieces and then joined together during DNA replication is called
#17. Which of the following is non-genetic and is utilized for protein synthesis
#18. Which of the following enzymes is present at the replication fork
#19. The number of stop codons which do not code for any amino acids is
#20. The three-nucleotide codon system can be arranged into ————— combinations
Online Molecular Biology & Genetics MCQs MDCAT Quiz
- UGA codon in mitochondria reads
- If the DNA in all of the cells of an adult human were lined up end to end, it would stretch nearly
- The number of stop codons that do not code for any amino acids is
- The number of triplet codons having all three bases the same in 64 triplet codons is
- In a nucleotide having a cytosine base and linked to sugar by a glycosidic bond at carbon number
- The DNA molecule had a shape of a helix with a diameter of
- The diameter of the DNA double helix remains constant because of
- Length of Okazaki fragments in eukaryotes is a bout
- Which of the following enzymes is present at the replication fork
- The codons which code for the same amino acid are called
- In RNA, thymine is replaced by
- Which of the following RNAs picks up a specific amino acid from the amino acid pool in the cytoplasm to the ribosome during protein synthesis
- Which of the following is non-genetic and is utilized for protein synthesis
- Each amino acid in a protein is specified by
- The three-nucleotide codon system can be arranged into ————— combinations
- What would happen if, in a gene encoding a polypeptide of 50 amino acids, the 25th codon UAU is mutated to UAA?
- The biological process shown in the diagram is
- The two polynucleotide chains in DNA are
- Which of the following is correct regarding the genetic code
- The new strand synthesized in small pieces and then joined together during DNA replication is called
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