DNA 2025

Label the Nucleotide

c

b

a

Phosphate Group

Nitrogen Base

5 Carbon Sugar

Tags

NGSS.HS-LS1-1

What makes up the SIDES of a DNA ladder?

• nitrogen bases

• sugars & phosphates

• genes & chromosomes

• RNA

Tags

NGSS.HS-LS1-1

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

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

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

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

What is the sugar in DNA called?

• Deoxyribose
• Ribose

• Diglyceride
• Cellulose

Adenine pairs with...

• Thymine
• Cytosine
• Guanine
• It does not pair with any of them