DNA Intro Practice

DNA is a type of ​ (a)   , it is composed of smaller molecules called

​ (b)   .

• nucleic acid
• nucleotides
• protein
• amino acids

Tags

NGSS.HS-LS3-1

Label the parts of the nucleotide.

c

d

e

phosphate

amino acid

Nitrogen Base

Deoxyribose Sugar

hydrogen base

Tags

NGSS.HS-LS1-1

DNA has a shape called a ​ (a)   ​ (b)   .

• double
• helix
• triple
• ladder

Organize these options into the right categories

Groups:

(a) Nitrogen bases

,

(b) Sugars

• Deoxyribose

• Thymine

• Guanine

• Cytosine

• Adenine

• Lactose

• Sucrose

• Ribose

Tags

NGSS.HS-LS1-6

The bases pair up using complementary base-pairing rules. These rules state that:

adenine will only pair with ​ (a)   .

And

cytosine will only pair with ​ (b)   .

• thymine
• guanine
• adenine
• cytosine

DNA replicates (copies itself) during the ______ phase of interphase during the cell cycle.

• G1

• S

• G2

• M

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

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

Match the following nitrogen bases that follow the base pair rule.

• Guanine

• 
• Thymine

• 
• Adenine

• 
• Cytosine

•