DNA Structure and Replication

What makes up the SIDES of a DNA ladder?

• nitrogen bases

• sugars & phosphates

• genes & chromosomes

• RNA

What makes up the rungs (steps) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

What SHAPE is DNA?

• single strand

• straight ladder

• double helix (twisted ladder)

• DNA has no shape

In DNA. what base always pairs with A?

• A

• T

• C

• G

If one strand of a DNA molecule has the following order of bases, what will be the correct order of bases on the complementary (matching) strand?

AATTGGCC

• AATTGGCC

• TTAACCGG

• GGCCAATT

• GACTGACT

Tags

NGSS.HS-LS1-1

What is DNA made up of?

• nucleotides

• cytoplasm

• RNA

• cells

Which of the following best describes a DNA molecule?

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

Tags

NGSS.HS-LS1-1

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine