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)

Guanine (G) joins to ​ (a)  

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

What does the helicase enzyme do during DNA replication?

• separates the two strands of DNA

• adds nucleotides to the growing strand of DNA

• builds nucleotides

• digests DNA

What does the DNA polymerase enzyme do during DNA replication?

• separates the two strands of DNA

• adds nucleotides to the growing strand of DNA

• builds nucleotides

• digests DNA