DNA Review

The sugar in DNA is ​ (a)  

• Deoxyribose
• Ribose
• Adenine
• Thymine

DNA is in the shape of a

When unwound, DNA is in the shape of a ​ (a)  

• ladder
• double helix

Adenine always pairs with

• Guanine

• Cytosine

• Thymine

• Deoxyribose

DNA is located in the cell's

• nucleus

• cytoplasm

• nucleiod

• ribosome

DNA is made up of units called

The rungs of the DNA ladder are made of

• phosphates

• Deoxyribose

• ribose

• Nitrogen bases

The backbone of DNA is made of ​ phosphates and a ​ (a)  

• adenine
• thymine
• deoxyribose sugar
• guanine
• cytosine

Cytosine always pairs with

• Adenine

• Thymine

• Guanine

• a phosphate

Nucleotides are composed of a deoxyribose sugar, a phosphate group and

• a nitrogenous base

• ribose sugar