Intro to DNA

This picture shows the physical structure of a DNA molecule. What is the name of this structure?

• double ladder

• twisted spiral

• double helix

• spiral twist

Tags

NGSS.HS-LS1-1

Which of the following statements are true about DNA. CHECK ALL THAT APPLY!

• DNA contains genetic information.

• The order and sequence of adenine, thymine, guanine and cytosine determine an organism's genetic code.

• All living things have DNA.

• DNA is found on chromosomes located in the nucleus of cells.

Which of the following contain molecules of DNA? Choose all that apply.

• Saliva

• Blood

• Hair

• Fragments of Skin

How many pairs of chromosomes do humans have?

• 1

• 16

• 23

• 46

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which shows the correct complementary base pairing for DNA?

• C-A, T-G
• A-G, C-T
• C-G, U-A
• T-A, G-C