NEET Biology: Molecular Genetics Practice Questions
13 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.
- Q1.In the DNA double helix, the two strands are held together by which type of bonds?Easy
- Q2.Which enzyme is primarily responsible for DNA replication in prokaryotes?Easy
- Q3.The process of copying genetic information from one strand of DNA into RNA is called:Easy
- Q4.Which nitrogenous base is found in RNA but not in DNA?Easy
- Q5.The start codon for protein synthesis in most organisms is:Easy
- Q6.In the lac operon, the repressor protein binds to which of the following sites to inhibit transcription?Medium
- Q7.If the sequence of the coding strand of a gene is 5'-ATGCATGC-3', what will be the sequence of the corresponding mRNA?Medium
- Q8.In a DNA molecule, the total amount of purine nucleotides is 40 percent. What is the percentage of cytosine in this DNA molecule?Medium
- Q9.Which of the following statements correctly describes the role of the Rho protein in bacterial transcription termination?Hard
- Q10.During the process of translation in prokaryotes, which of the following events occurs immediately after the formation of the peptide bond between the amino aciHard
- Q11.In a hypothetical organism, the DNA polymerase III enzyme has a mutation that increases its error rate to 1 in 1000 nucleotides. If a gene is 3000 base pairs loHard
- Q12.In the lac operon, if a mutation occurs in the operator region such that the repressor protein can no longer bind, what will be the phenotype of the cell regardHard
- Q13.A segment of double-stranded DNA contains 20 percent Adenine. What is the percentage of Cytosine in this DNA molecule?Hard
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