BIOCHEM - CHAPTER EXAM PART 2

Which of the following describes tRNA?

• A type of small RNA that carries genetic information from DNA to mRNA.
  
  

• A type of large RNA that is involved in the replication of DNA.

• A type of small RNA which translates information from the mRNA strand to amino acid sequence.

• A type of ribosomal RNA that forms the structural framework of ribosomes.

Which of the following does not belong to tRNA?

• Anticodon

• Amino acid attachment site

• A ribosomal binding site at 5’ end

• A cloverleaf structure

Which of the following best describes mRNA?

• A type of DNA that stores genetic information.

• A molecule that carries genetic information from DNA to the ribosome for protein synthesis.

• An enzyme that catalyzes the replication of DNA.

• A structural component of ribosomes involved in protein synthesis

What is the proper order of events in the central dogma of molecular biology?

• Replication to Transcription to Translation.

• Translation to Replication to Transcription

• Replication to Translation to Transcription

• Transcription to Translation to Replication

Transcription is the process by which DNA is replicated into another DNA strand.

• Transcription is the process by which DNA is replicated into another DNA strand.

• Transcription is the process of translating mRNA into a protein.

• Transcription involves the synthesis of RNA from a DNA template.

• Transcription occurs in the cytoplasm of the cell.

Which of the following describes a property of DNA replication?

• Conservative

• Dispersive

• Semi-conservative

• Fragmented

What is the primary function of the protein known as Helicase in DNA replication?

• To synthesize new DNA strands

• To attach and break hydrogen bonds between complementary base pairs

• To repair damaged DNA

• To transport nucleotides to the replication fork

Replication begins when which of the following occurs?

• A DNA polymerase synthesizes new DNA strands.

• An initiator protein unwinds a short portion of the DNA double helix.

• RNA primers are laid down on the template strand.

• The replication fork is formed by helicase activity.

What is formed as helicase moves along the DNA strand during DNA replication?

• A transcription bubble

• A protein complex

• An RNA primer

• A replication fork

What role does the primer play in DNA replication?

• It serves as a template for protein synthesis.

• It initiates the synthesis of new DNA strands by providing a starting point.

• It acts as an enzyme to unwind the DNA double helix.

• It is responsible for repairing damaged DNA.