Exploring DNA: Replication and Beyond

What is the primary enzyme responsible for adding nucleotides during DNA replication?

• RNA polymerase

• DNA polymerase

• Helicase

• Ligase

During DNA replication, which enzyme is responsible for unwinding the DNA double helix?

• Primase

• Ligase

• Helicase

• Topoisomerase

In transcription, which molecule is synthesized from a DNA template?

• DNA

• mRNA

• tRNA

• rRNA

Which of the following is NOT a type of RNA involved in protein synthesis?

• mRNA

• tRNA

• rRNA

• dRNA

What is the role of tRNA during translation?

• Carries amino acids to the ribosome

• Synthesizes mRNA

• Forms the ribosome

• Unwinds DNA

Which of the following best describes a mutation?

• A change in the sequence of DNA

• A process of DNA replication

• The synthesis of RNA from DNA

• The assembly of proteins

What is the function of RNA polymerase during transcription?

• It unwinds the DNA double helix

• It synthesizes RNA from a DNA template

• It adds nucleotides to the growing DNA strand

• It joins Okazaki fragments

Which of the following is the start codon for translation?

• UAA

• AUG

• UGA

• UAG

What is the role of ribosomes in translation?

• They transcribe DNA into RNA

• They synthesize DNA

• They assemble amino acids into proteins

• They replicate RNA

Which of the following mutations involves the insertion or deletion of a nucleotide?

• Point mutation

• Silent mutation

• Frameshift mutation

• Missense mutation