Which of the following statements about DNA structure and replication is correct?
DNA polymerase catalyzes the formation of hydrogen bonds between complementary base pairs.
DNA helicase is responsible for synthesizing RNA primers during replication.
DNA polymerase catalyzes the addition of nucleotides to the 3′3'3′ end of the growing polynucleotide strand.
Free mononucleotides are joined together by hydrogen bonds to form the sugar-phosphate backbone.
4 exam-style questions on OCR A A Level Biology Nucleotides and nucleic acids. Each one has a worked solution and a mark scheme showing where the marks go.