DNA and RNA Processes Quiz

What is the primary purpose of protein synthesis?

• To break down proteins into amino acids

• To create proteins from amino acids

• To transcribe DNA into RNA

• To replicate RNA

What is the complementary strand to the sense strand of DNA called?

• Antisense strand

• Lagging strand

• Polymerase strand

• Leading strand

Which enzyme is responsible for proofreading during DNA replication?

• DNA helicase

• RNA polymerase

• Ligase

• DNA polymerase

What is the main difference between DNA and RNA?

• DNA is made of ribose sugar

• RNA is single-stranded

• DNA contains uracil instead of thymine

• RNA is double-stranded

What replaces thymine in RNA?

• Adenine

• Cytosine

• Guanine

• Uracil

What is the start codon for protein synthesis?

• UGA

• AUG

• UAA

• UAG

How many nitrogenous bases are read at a time during translation?

• Four

• Three

• Two

• One

What is the role of DNA helicase in DNA replication?

• To unwind the DNA double helix

• To join Okazaki fragments

• To synthesize new DNA strands

• To transcribe DNA into RNA

Which enzyme synthesizes messenger RNA from DNA?

• DNA polymerase

• RNA polymerase

• Ligase

• Helicase

What is the function of Okazaki fragments?

• To initiate DNA replication

• To form the lagging strand

• To form the leading strand

• To transcribe RNA