Messenger RNA

Open Ended

Describe the structure of DNA in your own words

Draw

Practice drawing the structure of a nucleotide. Make sure to label the phosphate, sugar, and nitrogenous base.

Multiple Choice

If a strand of DNA has 20 adenine bases present, how many thymine bases are there in the same strand of DNA?

• 20
• 10
• 40

• 15

Labelling

Label the DNA molecule

Drag labels to their correct position on the image

Nucleotide

Deoxyribose

Ribose

Nitrogenous Base

Phosphate

Multiple Choice

_____ bonds are found between the phosphates and the deoxyribose sugars in the DNA backbone, and ______ bonds are found between nitrogenous bases

• hydrogen; covalent

• weak; strong

• Strong; weak

• Disulfide bonds; van der Waals bonds

Multiple Choice

What is the name of the base that replaces thymine in RNA?

• adenine
• uracil
• guanine
• cytosine

Open Ended

Describe 3 differences between DNA and RNA