Structure of DNA Formative

What shape best describes DNA

• helix
• double helix
• triple helix
• circular 

The "backbone" of DNA consists of

• nitrogen base, phosphate
• sugar (deoxyribose) and phosphate
• sugar (ribose) and phosphate
• adenine, thymine, cytosine, guanine

adenine, guanine, cytosine, and thymine are known as

• sugars
• phosphates
• lipids
• nitrogen bases

How many different varieties of nitrogen bases are used to build DNA

• 1
• 4
• 8
• 12

adenine pairs with

• guanine
• thymine
• cytosine
• adenine

guanine pairs with

• cytosine
• thymine
• adenine
• guanine

What would be the complementary strand of DNA if you were given this sequence
AACTGC

• AACTGC
• TTGACG
• GCAGTT
• GATCAT

The building blocks of DNA are known as

• nucleic acids
• nucleotides
• nitrogen bases
• amino acids

One nucleotide is made of

•  a sugar, phosphate, and a base (A,T,C, or G)
• a DNA, RNA, and Protein
• adenine, guanine, cytosine, and a thymine
• there's no way to know

How do you think DNA replicates (makes a copy) of itself?

• it can't
• it unzips, and new strands are added
• it all comes apart and two new strands are built
• we really don't know how this works

Tags

NGSS.HS-LS3-2