DNA Lesson

Open Ended

1. What do you know about DNA?

2. Why do you suppose forensic scientist use DNA to help solve crimes?

Multiple Choice

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Multiple Choice

What makes up the sides/backbone of a DNA ladder?

• nitrogen bases

• sugars & phosphates

• genes & chromosomes

• RNA

Multiple Choice

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Multiple Choice

Using the base pair rule, Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Multiple Choice

Which of the following best describes the structure of a DNA molecule?

• double helix
• single linear strand

• double linear strand

• double perpendicular strands

Multiple Choice

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Multiple Choice

Semiconservative replication is how DNA reproduces. What does it mean?

• DNA will only partially copy itself

• One strand is kept as a template to build the other new strand

• One strand is upside down to the other strand.

• One strand is made of DNA while the other strand is made of proteins

Multiple Choice

Which sequence of DNA bases would pair with this partial strand
3'-ATG-TGA-CAG-5'

• 5'-ATG-TGA-CAG-3'

• 5'-TAC-ACT-GTC-3'

• 5'-GTA-AGT-GAC-3'

• 5'-CAT-TCA-CTG-3'

Open Ended

Explain how foresenic scientists use DNA to help them solve crimes.

Open Ended

Reflection: After learning about DNA, what parts of this lesson did you learn the most OR stuck with you? Be specific