DNA and RNA Quiz

What is DNA?

• Deoxyribonucleic Acid

• Ribonucleic Acid

• made of nitrogen bases, phosphates, and sugars (repeating nucleotides)

• a signle helix

• makes up chromosomes

Who created the model for DNA that we use today.

• Griffith and Avery

• Chargraff

• Wilkins and Franklin

• Watson and Crick

Who took the X-ray that lead to the created the model for DNA that we use today.

• Griffith and Avery

• Chargraff

• Franklin

• Crick and Watson

What is a nucleotide of DNA made of?

• nitrogen bases, phosphates, and sugars (ribose for DNA)

• nitrogen bases, phosphates, and sugars (deoxyribose for DNA)

• nitrogen bases only

• phosphates and sugars (deoxyribose)

• phosphates and sugars (ribose)

What is the backbone or side rails of DNA made of?

• nitrogen bases, phosphates, and sugars (ribose for DNA)

• nitrogen bases, phosphates, and sugars (deoxyribose for DNA)

• nitrogen bases only

• phosphates and sugars (deoxyribose)

• phosphates and sugars (ribose)

Why is DNA called a double helix?

• it is made of two nitrogen bases

• it has two sides

• it is twisted

• it has two sides and is twisted

Which nitrogen bases pair together in DNA replication?

• Adenine and Cytosine

• Adenine and Thymine

• Adenine and Guanine

• Guanine and Cytosine

What type of bond holds together the nitrogen bases?

• Hydrogen Bond (weak bond)

• Covalent Bond (strong bond)

• Ionic Bond

• no bond

What type of bond holds together the sides of the DNA molecule?

• Hydrogen Bond (weak bond)

• Covalent Bond (strong bond)

• Ionic Bond

• no bond

Which enzyme "unzips" the DNA molecule to prepare for replication?

• DNA Helicase

• RNA Helicase

• DNA Polymerase

• RNA Polymerase