Components of DNA

A nucleotide is made of....

(Select ALL correct answers)

• phosphate group

• five carbon (pentose) sugar

• Nitrogenous base

• amino acid

What are the 4 nitrogenous bases?

• U T C G

• A T C G
• A C G R

• A T C P

What is the backbone of DNA made of?

(a)  

• glucose and sucrose

• amino acids and lipids

• deoxyribose (sugar) and phosphate
• carbon and helium

Adenine always binds with

• adenine

• thymine

• cytocine

• guanine

Cytosine always binds with

• adenine

• thymine

• cytocine

• guanine

The entire structure of DNA looks like a ladder twisted into a spiral. This shape is known as a