Nucleotides and DNA Replication Quiz

What are the three components of a nucleotide?

• Sugar, phosphate, nitrogenous base, hydrogen

• Sugar, phosphate, nitrogenous base, sulfur

• Sugar, phosphate, nitrogenous base, oxygen

• Sugar, phosphate, nitrogenous base, carbon

Which of the following is not a nucleotide found in DNA?

• Uracil

• Adenine

• Cytosine

• Thymine

What holds the two strands of DNA together?

• Peptide bonds

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

Which nucleotide pairs with guanine in DNA?

• Uracil

• Thymine

• Adenine

• Cytosine

What is the primary enzyme responsible for synthesizing new DNA strands during replication?

• Topoisomerase

• RNA primase

• DNA polymerase

• DNA helicase

Which strand of DNA replication is synthesized continuously?

• Template strand

• Lagging strand

• Leading strand

• Complementary strand

What is the function of DNA ligase in DNA replication?

• Unzips the DNA

• Removes RNA primers

• Staples the DNA fragments together

• Synthesizes new DNA strands

What is the term for the process by which a cell copies its DNA?

• Mutation

• Replication

• Translation

• Transcription

Label the nucleotide

a

b

c

Phosphate

Nitrogenous base

Sugar