DNA

DNA contains each of the following bases, except

• Uracil
• Adenine
• Cytosine
• Thymine

In a DNA molecule, the sides of the "ladder" are composed of...

• Single nucleotides
• Pairs of nucleotides
• Joined sugars and phosphates
• Joined nitrogen bases and phosphates 

In a DNA molecule, thymine always pairs with...

• Cytosine 
• Guanine
• Uracil
• Adenine

If one side of a DNA molecule reads ATGCCGT, what would the complementary side read?

• TACGCCU
• UACGGCA
• TACGGCA
• TAGCCGA

DNA is held together by 

• magnetism
• glue
• hydrogen bonds
• glucose

The twisted ladder shape of DNA is called a:

• hydrogen twist
• deoxyribose flip
• double helix
• double membrane

DNA is called the "blueprint of life" because:

• it is like a fingerprint
• it has a blue color
• it contains the plans for building an organism
• it can relay messages to other molecules

The sugar found in DNA is:

• deoxyribose
• ribose
• glucose
• sucrose

The two men who established the structure of DNA were:

• Frederick and Alvers
• Watson and Crick
• Berkely and Fry
• Darwin and Lamarke

WHAT IS A NUCLEOTIDE?

• Basic unit of DNA
• Consists of a deoxyribose sugar and a phosphate
• Sides of a DNA
• Found only in animals