DNA and Its Role in Life

What is the primary role of DNA in living organisms?

• To store genetic information

• To store energy

• To transport nutrients

• To provide structural support

Who was the first to discover the substance we now know as DNA?

• Phoebus Levine

• James Watson

• Friedrich Miesha

• Rosalind Franklin

Which scientist's work led to the understanding of DNA's four organic bases?

• Erwin Chargaff

• Friedrich Miesha

• Phoebus Levine

• James Watson

What technique was crucial in determining the structure of DNA?

• Mass spectrometry

• Nuclear magnetic resonance

• X-ray crystallography

• Electron microscopy

What are the components of a nucleotide in DNA?

• A lipid, a base, and a phosphate

• A sugar, a lipid, and a protein

• A protein, a sugar, and a base

• A sugar, a base, and a phosphate

Why do adenine and thymine pair together in DNA?

• They are both pyrimidines

• They are both purines

• They share two hydrogen bonds

• They share three hydrogen bonds

What did Darwin's theory suggest about the history of all organisms?

• They evolved independently

• They share a common ancestor

• They were created simultaneously

• They have no evolutionary connection

How can DNA sequence data impact the reconstruction of the tree of life?

• By eliminating the need for phylogenetic analysis

• By reducing the complexity of analysis

• By offering millions of traits to study

• By providing less data

Approximately how many base pairs are in the human genome?

• 1 million

• 100 million

• 5 billion

• 10 billion

What makes DNA the 'king of information storage'?

• Its structural complexity

• Its role in energy production

• Its vast storage capacity

• Its ability to replicate quickly