WRONG ANSWER EXAM 4

What is the role of helicase during DNA replication?

• Unwinding the DNA double helix

• Adding nucleotides to the DNA

• Synthesizing RNA primers

• Sealing nicks in the DNA

What does the term "codon" refer to in genetics?

• A sequence of three nucleotides on tRNA

• A sequence of three nucleotides on mRNA

• A start codon in DNA

• A stop codon in DNA

What enzyme adds new DNA sequences to chromosome ends to prevent telomere shortening?

• DNA polymerase

• Helicase

• Primase

• Telomerase

How is DNA replication terminated in prokaryotic cells?

• When all the DNA has been replicated

• When the DNA reaches the end of the chromosome

• When the two replication forks meet

What is the name of the phenomenon where bacteria acquire new genetic material from
bacteriophages?

• Transformation

• Transduction

• Transcription

• Replication

During DNA replication, what process removes RNA primers and replaces them with DNA?

• DNA polymerase I

• DNA polymerase III

• Ligase

• Helicase

In eukaryotic DNA replication, what enzyme synthesizes the RNA primers for Okazaki fragments?

• DNA ligase

• DNA polymerase I

• Primase

• Helicase

Which term describes the ability of a single gene to code for multiple protein?

• Degeneracy

• Alternative splicing

• Transcription factor

• Codon adaptation

Which type of DNA repair corrects small, non-helix-distorting base lesions?

• Mismatch repair

• Base excision repair

• Nucleotide excision repair

• Photoreactivation

Which of the following is a consequence of a frameshift mutation?

• Substitution of one nucleotide

• Deletion of one nucleotid

• Addition of one nucleotide

• Inversion of one nucleotide