Exploring DNA Structure and Replication

What molecule is considered the most complex and potentially the most important?

• Carbohydrate

• DNA

• RNA

• Protein

What are the building blocks of DNA called?

• Fatty acids

• Amino acids

• Nucleotides

• Monosaccharides

What shape does DNA form?

• Single helix

• Quadruple helix

• Double helix

• Triple helix

Which base does adenine (A) pair with in DNA?

• Thymine (T)

• Uracil (U)

• Guanine (G)

• Cytosine (C)

How many hydrogen bonds are between guanine and cytosine in DNA?

• Four

• Three

• Two

• One

What is the main difference between DNA and RNA?

• DNA is double-stranded, while RNA is single-stranded.

• DNA contains ribose, while RNA contains deoxyribose.

• DNA is found only in the nucleus, while RNA is found only in the cytoplasm.

• DNA replicates itself, while RNA does not.

Who was the first to confirm the helical structure of DNA?

• Friedrich Miescher

• Rosalind Franklin

• Francis Crick

• James Watson

Why was Rosalind Franklin not awarded the Nobel Prize?

• Nobel Prizes cannot be awarded posthumously

• She declined the prize

• Her contribution was not recognized

• Her work was disproven

What is the role of DNA polymerase in DNA replication?

• Adding nucleotides to the growing DNA strand

• Unzipping the DNA helix

• Forming hydrogen bonds between nucleotides

• Breaking down the DNA molecule

What enzyme initiates the replication process by laying down RNA primers?

• RNA Primase

• DNA Polymerase

• DNA Ligase

• Helicase