DNA and change over time

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

The number of DNA differences between species can tell us

• Whether they live in the same habitat
• Approximately how long ago they shared a common ancestor
• Whether they eat the same food
• Whether they live in the water or on land

In DNA, Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

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

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

A change in the sequence of DNA base pairs is called a

• mutation
• enzyme
• species
• helix

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• chloroplast
• nucleus

What kind of information does DNA carry?

• genetic
• nuclear
• cell structure
• it doesn't carry any info

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1