VBSRP Bio.5B Protein Synthesis

What is a codon?

• A three-nucleotide sequence in DNA and RNA that encodes an amino acid or signifies a start or stop signal

• A molecule that carries genetic information from the nucleus to the cytoplasm

• A process by which DNA is copied

• A process by which mRNA is decoded and a protein is produced

What is the role of messenger RNA (mRNA)?

• It is a three-nucleotide sequence that encodes an amino acid

• It carries genetic information from the nucleus to the cytoplasm

• It is a process by which DNA is copied

• It is a molecule made of two chains of nucleotides

Which process involves copying a nucleotide sequence of DNA to form a complementary strand of mRNA?

• Translation

• Replication

• Transcription

• Protein synthesis

What is the sugar found in RNA nucleotides?

• Deoxyribose

• Ribose

• Glucose

• Fructose

Which nitrogen base is found in RNA but not in DNA?

• Adenine

• Thymine

• Uracil

• Cytosine

What is the first stage of gene expression called?

• Translation

• Replication

• Transcription

• Mutation

What is the role of mRNA in protein synthesis?

• It carries amino acids to the ribosome.

• It forms the structure of ribosomes.

• It carries the genetic information from DNA to the ribosome.

• It catalyzes the formation of peptide bonds.

What are the sequences on mRNA that correspond to amino acids called?

• Anticodons

• Promoters

• Codons

• Exons

What is the role of messenger RNA (mRNA) in the cell?

• It carries genetic information from the nucleus to the cytoplasm.

• It synthesizes proteins directly.

• It stores genetic information permanently.

• It breaks down proteins into amino acids.

Which process involves the making of proteins based on the information in genes?

• Replication

• Transcription

• Translation

• Mutation

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