IB Exam: DNA & Central Dogma Review

Label the nucleotide

a

b

c

Sugar

Phosphate

Nitrogenous base

Match the Base Pairs

• Guanine

• Cytosine

• Thymine

• Adenine

• Cytosine

• Guanine

• Adenine

• Thymine

How many hydrogen bonds connect adenine and thymine?

• 1

• 2

• 3

• 4

How many hydrogen bonds connect guanine and cytosine?

• 1

• 2

• 3

• 4

Which of the labelled structures shows the correct directionality of the DNA molecule?

• 
• 
• 
• 

Click on Adenine

Tags

NGSS.HS-LS1-1

Click on Cytosine

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Click on Guanine

Tags

NGSS.HS-LS1-1

Click on Thymine

Tags

NGSS.HS-LS1-1

What elements do we find in Nucleic Acids (DNA) and Protein?

Groups:

(a) DNA

,

(b) Protein

,

(c) Both

• Sometimes Sometimes Sulfur

• Oxygen

• Nitorgen

• Hydrogen

• Carbon

• Phosphorus

Tags

NGSS.HS-LS1-1