Unit 4: DNA Replication. 1

What is the backbone of DNA made of?

• Glucose sugar-phosphate

• Deoxyribose sugar-phosphate

• Fructose sugar-phosphate

• Ribose sugar-phosphate

Which enzyme is responsible for unwinding the DNA helix during replication?

• RNA polymerase

• DNA helicase

• DNA ligase

• DNA polymerase

What type of bond holds the complementary nucleotide bases together in DNA?

• Ionic bonds

• Covalent bonds

• Metallic bonds

• Hydrogen bonds

Which of the following is NOT a component of a nucleotide?

• Phosphate group

• Nitrogen base

• Sugar

• Amino acid

What is the term for the process that joins nucleotides together?

• Oxidation

• Condensation polymerisation

• Reduction

• Hydrolysis

Which of the following is a characteristic of RNA?

• Contains thymine

• Contains ribose sugar

• Contains deoxyribose sugar

• Double stranded

What is the function of DNA polymerase?

• Unwinding the DNA helix

• Synthesizing new DNA strands

• Joining Okazaki fragments

• Terminating replication

What are Okazaki fragments?

• Short DNA fragments on the lagging strand

• Fragments of RNA

• Enzymes that synthesize DNA

• Proteins involved in replication

What is the term for the region where DNA replication begins?

• Replication fork

• Origin of replication

• Replication bubble

• Termination sequence

Which strand is synthesized continuously during DNA replication?

• Leading strand

• Lagging strand

• Coding strand

• Template strand