7D VAN
EXAM GUIDE 2025
|MOST COMMON QUESTIONS WITH CORRECTLY
VERIFIED ANSWERS|ALREADY A+
GRADED|GUARANTEED PASS
What did the Hershey and Chase experiments demonstrate? - DNA is the genetic material
In the Hershey and Chase experiment, which radioactive element labeled the DNA of
bacteriophages? - Radioactive phosphorus (P)
What is the sugar present in RNA but not in DNA? - Ribose
Which nitrogenous base is found in RNA but not in DNA? - Uracil (U)
How are the two strands of DNA oriented relative to each other? - Antiparallel
What is the role of helicase in DNA replication? - Unwinding the DNA double helix
During DNA replication, what is the function of DNA polymerase on the leading strand? -
Adding nucleotides in a continuous fashion
What are Okazaki fragments? - Short DNA fragments synthesized on the lagging strand
In transcription, which enzyme is responsible for synthesizing mRNA from a DNA template? -
RNA polymerase
Where does translation occur within the cell? - Ribosomes in the cytoplasm
What is the start codon for protein synthesis? - AUG
What is the role of tRNA during translation? - Carrying amino acids to the ribosome
What is the result of a silent mutation in DNA? - No change in the amino acid sequence
What is a frameshift mutation? - Insertion or deletion of nucleotides that disrupts the
reading frame
EXAM GUIDE 2025
|MOST COMMON QUESTIONS WITH CORRECTLY
VERIFIED ANSWERS|ALREADY A+
GRADED|GUARANTEED PASS
What did the Hershey and Chase experiments demonstrate? - DNA is the genetic material
In the Hershey and Chase experiment, which radioactive element labeled the DNA of
bacteriophages? - Radioactive phosphorus (P)
What is the sugar present in RNA but not in DNA? - Ribose
Which nitrogenous base is found in RNA but not in DNA? - Uracil (U)
How are the two strands of DNA oriented relative to each other? - Antiparallel
What is the role of helicase in DNA replication? - Unwinding the DNA double helix
During DNA replication, what is the function of DNA polymerase on the leading strand? -
Adding nucleotides in a continuous fashion
What are Okazaki fragments? - Short DNA fragments synthesized on the lagging strand
In transcription, which enzyme is responsible for synthesizing mRNA from a DNA template? -
RNA polymerase
Where does translation occur within the cell? - Ribosomes in the cytoplasm
What is the start codon for protein synthesis? - AUG
What is the role of tRNA during translation? - Carrying amino acids to the ribosome
What is the result of a silent mutation in DNA? - No change in the amino acid sequence
What is a frameshift mutation? - Insertion or deletion of nucleotides that disrupts the
reading frame
