DNA Replication

Match the following enzymes with the correct job in DNA replication.

• Unzips the DNA by breaking the bonds between nitrogenous bases

• helicase

• Adds nucleotides to build a new strand of DNA

• primase

• Bonds fragments of DNA together on the lagging strand

• DNA polymerase

• Adds a primer to indicate where to start adding new nucleotides

• ligase

Each strand of DNA acts as a template for a new strand. This shows the _____ nature of DNA.

• antiparallel

• semiconservative

• conservative

• Okazaki

DNA strands for

• ribose nucleic acid

• deoxyribose nucleic acid

• detracted nucleic acid

• amino acid

What are the basic building blocks of a DNA molecule?

• amino acids

• nucleotides

• deoxyribose sugar

• nitrogenous bases

What are the components of a nucleotide? (Click all that apply)

• deoxyribose sugar

• nitrogenous bases

• phosphate

• amino acid

What makes up the sides of the DNA molecule?

• sugar and phosphates

• bases and phosphates

• sugar and bases

• bases

What makes up the "rungs" of the DNA molecule?

• sugar and phosphates

• bases and phosphates

• sugar and bases

• bases

Adenine (A) joins to ​ (a)  

• Thymine (T)
• Cytosine (C)
• Guanine (G)
• Adenine (A)

Thymine (T) joins to ​ (a)  

• Adenine (A)
• Cytosine (C)
• Guanine (G)
• Thymine (T)

Cytosine (C) joins to ​ (a)  

• Guanine (G)
• Cytosine (C)
• Thymine (T)
• Adenine (A)