Transcription and Protein Synthesis Quiz

What is the first step in protein synthesis?

• Translation

• Transcription

• Replication

• Mutation

Which enzyme is responsible for unwinding and unzipping the DNA double helix?

• DNA polymerase

• RNA helicase

• RNA polymerase

• DNA helicase

What is the sense strand of DNA also known as?

• Non-coding strand

• Antisense strand

• Template strand

• Coding strand

What is the function of RNA polymerase in transcription?

• Creating DNA helix

• Forming hydrogen bonds

• Joining RNA nucleotides

• Unwinding DNA

Which nucleotide in RNA pairs with adenine in DNA?

• Uracil

• Guanine

• Cytosine

• Thymine

What type of bonds are formed between RNA nucleotides by RNA polymerase?

• Ionic bonds

• Covalent bonds

• Phosphodiester bonds

• Hydrogen bonds

What is the function of mRNA in protein synthesis?

• Forming hydrogen bonds

• Creating DNA helix

• Carrying amino acids

• Unwinding DNA

Where does mRNA go after being synthesized in the nucleus?

• Endoplasmic reticulum

• Ribosomes

• Nucleolus

• Mitochondria

Why do we need to make mRNA for protein synthesis instead of using DNA directly?

• DNA cannot form phosphodiester bonds

• DNA is too small to pass through nuclear pores

• DNA contains uracil instead of thymine

• DNA is too big to pass through nuclear pores

What is the next stage after mRNA leaves the nucleus?

• Translation

• Transcription

• Mutation

• Replication