DNA Replication and Structure

What enzyme unzip or opens the DNA strand?

• DNA helicase

• DNA ligase

• DNA polymerase

• The DNA strand cannot be opened

What enzyme unzip or opens the DNA strand?

• DNA helicase

• DNA ligase

• DNA polymerase

• The DNA strand cannot be opened

What enzyme moves along the DNA strand to add nucleotides and proofread the strand?

• DNA helicase

• DNA ligase

• DNA polymerase

• The DNA strand cannot be opened

What is the function of DNA polymerase?

• Make DNA from nucleotides
• Joining Okazaki fragments
• Sealing repairs
• Sealing recombination fragments

What is the function of DNA helicase?

• Attach new nucleotides
• To unzip the strands of DNA
• Remove nucleotides
• To perform crossing over

Adenine bonds with ______________ in DNA.

• Guanine
• Thymine
• Cytosine
• Adenine

A nitrogenous base is an important component of the nucleotide making up DNA. Which of the following correctly lists the four possible nitrogenous bases in DNA? 

• glutamine, proline, tyrosine, phenylalanine 
• adenine,guanine,cytosine,thymine 
• leucine,proline,tyrosine,phenylalanine 
• adenine,guanine,cytosine,uracil 

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA
• TTAGTACCT
• UUAGUACCU
• GGATAUCUA

Tags

NGSS.HS-LS1-1

Where does DNA replication take place?

• Nucleus
• Ribosome
• Cytoplasm
• Golgi Body

Before the cell divides, what process needs to happen?

• Transcription
• Translation
• Replication
• Protein synthesis