IB Biology (HL) - Nucleic Acids

What is the name of sub-topic 7.1?

• Molecular Biology

• Nucleic acids

• DNA

• DNA structure

Hershey and Chase conducted a famous experiment to identify...

• Whether viruses invade bacteria or not

• Whether the genetic material was DNA or RNA

• Using radioisotopes to make protein and DNA

• Use radioisotopes to identify that proteins are as important as DNA

Why were viruses grown in S-35?

• Because DNA contains sulphur but not phosphorus

• Because some proteins contain an amino acid with sulphur

• Because DNA contains phosphorus but not sulphate

• Because some DNA contain an amino acid with sulphur

Why were viruses grown in P-32?

• Because the backbone of proteins contains phosphorus

• Because DNA contains sulphur and not phosphorus

• Because protein contains phosphorus and not sulphur

• Because DNA contains phosphorus and not sulphur

Which of the following is true?

• Protein is the genetic material of the cell

• DNA and protein is the genetic material of the cell

• DNA is the genetic material of the cell

• DNA is more important than protein

Tags

NGSS.HS-LS1-1

What is true about the structure of DNA?

• DNA is a single-stranded molecule

• Nitrates form outer backbone (bases inside)

• DNA forms a double helix

• Molecule forms a linear molecule

Who was awarded the Nobel prize for the discovery of the structure of DNA?

• Watson and Wilkins

• Wilkins and Franklin

• Wilkins and Crick

• Watson and Crick

What is the name of the experiment/technique used to deduce the structure of DNA?

• X-ray crystallography

• Infrared crystallography

• Bacteriophage chromatography

• Scattering pattern

Which of the following about DNA structure is false?

• DNA forms a helix

• DNA is double stranded

• DNA forms a twist every 40 angstroms

• There are approximately 10 bases per twist

Tags

NGSS.HS-LS1-1

What are purines and pyrimidines?

• Purine is single ring; Pyrimidine is double ring

• Names of different types of protein

• Purine is A and G; Pyrimidine is C and T

• Names of different types of DNA