Nitrogen Bases

The two strands of nitrogenous bases in DNA are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Tags

NGSS.HS-LS1-1

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

Tags

NGSS.HS-LS1-1

Adenine bonds with ______________.

• Guanine

• Thymine

• Cytosine

• Adenine

Guanine bonds with ______________.

• Adenine

• Guanine

• Cytosine

• Thymine

Complete the DNA molecule by matching the correct nitrogen base pairs.

d

c

b

a

T

G

C

A

Tags

NGSS.HS-LS1-1

Guanine is complementary to what other nitrogenous base?

• Cytosine

• Adenine

• Thymine

• Uracil

Tags

NGSS.HS-LS1-1

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

What pairs with Adenine in RNA?

• Guanine

• Cytosine

• Thymine

• Uracil

Which nitrogenous base is NOT found in DNA?

• Adenine

• Cytosine

• Uracil

• Thymine

Using the hotspot tool, label the nitrogenous base pair.

Tags

NGSS.HS-LS1-1