DNA Structure and Replication Quiz

Which nitrogenous base pairs with adenine in DNA?

• Guanine

• Thymine

• Uracil

• Cytosine

Tags

9-12-LS1.A-2

9-12-LS3.A-1

Which nitrogenous base pairs with adenine in DNA?

• Guanine

• Thymine

• Uracil

• Cytosine

Tags

9-12-LS1.A-2

9-12-LS3.A-1

What is the sugar molecule in RNA?

• Deoxyribose

• Ribose

• Glucose

• Fructose

Tags

9-12-LS1.A-2

9-12-LS3.A-1

Who used x-ray diffraction to confirm the helical structure of DNA?

• Francis Crick

• Rosalind Franklin

• Friedrich Miescher

• James Watson

Tags

9-12-LS1.A-2

9-12-LS3.A-1

How many chromosomes are there in a human somatic cell?

• 46

• 92

• 64

• 23

Tags

9-12-LS1.A-2

9-12-LS3.A-1

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

• Helicase

• RNA Primase

• DNA Polymerase

• DNA Ligase

Tags

9-12-LS1.A-2

9-12-LS3.A-1

What is the function of DNA Ligase during DNA replication?

• Unwinds the double helix

• Joins the Okazaki fragments on the lagging strand

• Replaces RNA primers with DNA nucleotides

• Adds matching nucleotides to the new DNA strand

Tags

9-12-LS1.A-2

9-12-LS3.A-1

How many base pairs are there in human chromosome 1?

• 24 million

• 47 million

• 200 million

• 247 million

Tags

9-12-LS1.A-2

9-12-LS3.A-1

Which enzyme is responsible for adding new nucleotides to the leading strand during DNA replication?

• Helicase

• DNA Ligase

• RNA Primase

• DNA Polymerase

Tags

9-12-LS1.A-2

9-12-LS3.A-1

How many DNA molecules are there in each somatic cell's nucleus?

• 23

• 64

• 46

• 92

Tags

9-12-LS1.A-2

9-12-LS3.A-1