DNA Structure and Gene Expression

What is the primary function of DNA?

• To store genetic information and carry the genetic code
• To pair A-T and G-C
• To unzip the DNA molecule
• To undergo cellular respiration

_______ is a segment of DNA that codes for a specific product (protein)

• Phosphate
• Sugar
• Gene
• Bond

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NGSS.HS-LS1-1

Genes turned _____ determine cells’ function.

• ON
• OFF

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NGSS.HS-LS1-1

NGSS.HS-LS3-2

An enzyme named __________, unwinds and unzips DNA molecules  by breaking hydrogen bonds at several sections

• Polymerase
• Unzipase
• Helicase
• Ligase

· When does DNA make a replica of itself? 

• during cell division
•  right before cell division
• after cell division
• DNA does not replicate

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NGSS.HS-LS1-4

Which answer choice correctly matches the base pairs?

• G-T
  A-G
• T-T
  G-G
• G-A
  T-C
• A-T
  C-G

DNA is a nucleic acid, so it is made of ___________ monomers.

• Nucleotide
• Monosaccharides
• Amino Acids
• Fatty Acids

After DNA replication is complete,

• Two genetically different DNA molecules are formed
• Four genetically identical DNA strands are formed.
• Two new genetically identical DNA molecules are formed.
• Five genetically identical DNA strands are formed.

All cells within an organism contain the _____ DNA sequence

• different
• same

How does genetic information flow?

• DNA to RNA to Protein
• Protein to DNA to RNA
• RNA to DNA to Protein
• DNA to Protein to RNA