Quiz on Transcription and Translation

Where does transcription occur in the cell?

• Cytoplasm

• Ribosome

• Nucleus

• Mitochondria

Where does translation occur in the cell?

• Ribosome

• Nucleus

• Mitochondria

• Endoplasmic reticulum

What is the first step of protein synthesis?

• Transcription

• Translation

• Replication

• Mutation

What type of RNA carries the instructions from DNA to the ribosome?

• rRNA

• mRNA

• tRNA

• dRNA

Which enzyme is responsible for transcribing DNA into RNA?

• Helicase

• DNA polymerase

• RNA polymerase

• Ligase

What base in RNA replaces thymine found in DNA?

• Uracil

• Cytosine

• Guanine

• Adenine

Which of the following sequences is an example of an mRNA transcript?

• ATCGGTA

• AUGCCGA

• TAGGCTA

• TTGGCCA

What is the purpose of tRNA in translation?

• To bring amino acids to the ribosome

• To carry DNA out of the nucleus

• To unzip the DNA strand

• To link mRNA to the nuclear membrane

What is the role of ribosomes in protein synthesis?

• They assemble amino acids into proteins

• They create mRNA from DNA

• They replicate DNA before cell division

• They carry genetic information

What is a codon?

• A piece of DNA

• A three-nucleotide sequence on mRNA that codes for an amino acid

• A type of enzyme

• A ribosome