Benchmark 3 Interim Practice Quiz 0

What are the four nitrogenous bases in DNA?

• Adenine, Guanine, Cytosine, Thymine

• Adenine, Guanine, Cytosine, Uracil

• Adenine, Guanine, Thymine, Uracil

• Adenine, Cytosine, Thymine, Ribose

What process copies DNA to make a new DNA molecule?

• Replication

• Translation

• Transcription

• Mutation

During transcription, what molecule is synthesized from the DNA template?

• Protein

• DNA

• mRNA

• tRNA

Which molecule carries amino acids to the ribosome during translation?

• mRNA

• rRNA

• tRNA

• DNA

What is the role of RNA polymerase?

• It helps replicate DNA.

• It synthesizes mRNA from a DNA template.

• It carries amino acids to the ribosome.

• It joins amino acids together to form a protein.

Which of the following best explains the significance of the complementary base pairing in DNA replication?

• It ensures that both new DNA molecules are identical to each other.

• It prevents mutations from occurring during the replication process.

• It increases the speed of the replication process.

• It allows DNA to replicate without enzyme assistance.

How does the structure of RNA differ from DNA, and why is this important for protein synthesis?

• RNA is double-stranded and can leave the nucleus, which is essential for translation.

• • RNA contains uracil instead of thymine, which allows it to be more versatile in protein synthesis.

• • RNA is single-stranded and can fold into complex shapes, allowing it to perform various roles in protein synthesis.

• • RNA has the same sugar as DNA, which makes it more stable and suitable for protein synthesis.

During transcription, a particular segment of DNA has the sequence TACGGC. What would be the corresponding mRNA sequence transcribed from this DNA segment?

• AUGCCG

• TAGCGC

• ATGCGC

• UACGGC

A mutation occurs in a DNA molecule, changing an adenine (A) to a guanine (G). Which process is most directly affected by this type of mutation?

• Replication

• Transcription

• Translation

• All of the above equally

Which of the following best describes the role of tRNA in translation?

• It binds to the mRNA codon, ensuring the correct amino acid is added to the protein.

• It carries ribosomes to the mRNA strand for efficient protein synthesis.

• It replicates the mRNA strand to produce multiple copies for protein synthesis.

• It modifies the mRNA strand to ensure compatibility with the ribosome.