Exploring the Structure of DNA and Its Genetic Code

In which year did the significant DNA discovery take place in Cambridge?

• 1973

• 1943

• 1953

• 1963

What are the four compounds that make up DNA?

• Adenine, Thymine, Cytosine, Uracil

• Adenine, Thymine, Cytosine, Guanine

• Adenine, Guanine, Cytosine, Uracil

• Adenine, Thymine, Guanine, Uracil

Who were the two scientists that hypothesized the structure of DNA?

• James Watson and Francis Crick

• James Watson and Maurice Wilkins

• Erwin Chargaff and Rosalind Franklin

• Maurice Wilkins and Rosalind Franklin

What did Erwin Chargaff discover about the amounts of adenine and thymine in organisms?

• They are always different

• They are always equal

• They are always higher than cytosine and guanine

• They are always lower than cytosine and guanine

What technique did Rosalind Franklin use to study the structure of DNA?

• Electron microscopy

• X-ray diffraction

• Nuclear magnetic resonance

• Mass spectrometry

What pattern did Rosalind Franklin's X-ray pictures suggest about DNA?

• A linear structure

• A helical structure

• A circular structure

• A branched structure

How many bonds are there between adenine and thymine in the DNA structure?

• Four

• One

• Three

• Two

How many bonds are there between cytosine and guanine in the DNA structure?

• One

• Three

• Four

• Two

What did the specific pairings of DNA bases suggest about DNA?

• Its ability to replicate

• Its ability to form proteins

• Its ability to degrade

• Its ability to mutate

Who received the Nobel Prize for the discovery of the DNA structure?

• Francis Crick, Maurice Wilkins, and Rosalind Franklin

• James Watson, Maurice Wilkins, and Erwin Chargaff

• James Watson, Francis Crick, and Maurice Wilkins

• James Watson, Francis Crick, and Rosalind Franklin