DNA Structure and Replication Review

What does DNA stand for?

• Deoxyribonucleic Acid

• Dioxyribonucleic Acid

• Deoxyribose Nucleic Acid

• Deoxynucleic Acid

What is the primary function of DNA?

• Energy storage

• Protein synthesis

• Carries genetic information

• Cell division

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

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

• Phosphate

• Deoxyribose sugar

• Nitrogenous base

• Ribose sugar

Which nitrogenous base pairs with Adenine (A)?

• Cytosine (C)

• Guanine (G)

• Thymine (T)

• Uracil (U)

According to Chargaff’s rules, which base pairs with Guanine (G)?

(a)  

What is the shape of DNA?

• Single strand

• Double helix

• Circular

• Linear

What forms the backbone of the DNA structure?

• Nitrogenous bases

• Phosphate and deoxyribose

• RNA and DNA

• Amino acids

What direction do the two strands of DNA run?

• 3' to 5'

• 5' to 3'

• Antiparallel

• Both A and B

Which enzyme unwinds the double helix during DNA replication?

• Primase

• Ligase

• Helicase

• DNA polymerase

What is the role of topoisomerase in DNA replication?

• Synthesizes RNA primers

• Adds nucleotides

• Unwinds the DNA

• Relieves tension in the DNA