Quiz on DNA Structure and Function

What kind of evidence could be used to convict someone in a crime?

Where is DNA found in the body, how might it be left at a crime scene?

What elements is DNA made of?

• Calcium, potassium, sodium, and magnesium
• Iron, zinc, copper, and selenium
• Carbon, hydrogen, oxygen, and nitrogen
• Phosphorus, sulfur, chlorine, and iodine

What are the monomer units called in DNA?

• Nucleotides
• Amino acids
• Fatty acids
• Monosaccharides

Name the 3 parts of this monomer unit?

What holds the 2 strands of DNA together?

Which bases form complimentary base pairs?

If the base sequence on 1 strand of DNA is GTTACCGTA what would the sequence be on the other strand?

• CAATGGCAC
• GTTACCGTA
• CAATGGCAT
• GTTAACGTA

If 19.9% of the base pairs in DNA are Guanine, what percentage is Thymine?

• 25.5%
• 30.1%
• 40.2%
• 15.7%

Answer explanation

19.9% is guanine then 19.9% must be Cytosine (base pairs)

19.9 + 19.9 = 39.8 %

which means 100% - 39.8 = 60.2% for other 2

60.2 / 2 = 30.1 % each for A and T (base pairs)

Where is DNA held inside a cell?

• Nucleus (in eukaryotic cells) or nucleoid (in prokaryotic cells)
• Cytoplasm
• Endoplasmic reticulum
• Mitochondria