C12 DNA Review

LO12.1: Which of the following correctly describes Griffith's experiments?

• Griffith worked with radioactive elements and bacteriophages

• Griffith worked with x-ray diffraction

• Griffith worked with 2 strains of bacteria and mice

• Griffith worked with enzymes to digest biomolecules

LO12.1: Which of the following correctly describes Griffith's discovery?

• Griffith discovered that the percentage of adenine is equal to that of thymine.

• Griffith discovered that DNA was the genetic material.

• Griffith discovered that the DNA molecule has 2 antiparallel strands.

• Griffith discovered that some heritable factor was transferred between cells that could change their traits.

LO12.1: Avery repeated Griffith's work, but how was Avery's work different?

• Avery made extracts from Griffith's heat-killed bacteria, then treated it with enzymes to destroy various molecules and then tested it to see if it could still result in transformation.

• Avery used Griffith's heat-killed bacteria and allowed a radioactive bacteriophage to infect them to determine what the genetic material was.

• Avery injected mice with various strains of bacteria and was surprised to find that the combination of R strain + heat-killed S strain killed the mice

• Avery build 3D models based on Griffith's x-ray diffraction photo of DNA.

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LO12.1: What material did Avery identify as Griffith's "transforming factor?"

• RNA

• DNA

• protein

• enzymes

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LO12.1: Hershey and Chase used which of the following in their experiments?

• enzymes and extract from heat-killed bacterial cells

• x-ray diffraction

• radioactively labeled bacteriophages and bacteria cells

• mice and bacteria that cause pneumonia

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LO12.1: After the bacteriophage had infected the bacterial cell, what molecule did Hershey & Chase find inside the cell?

• RNA

• lipid

• protein

• DNA

LO12.1: Which scientist was responsible for discovering the base pairing rule?

• Avery

• Chargaff

• Franklin

• Watson & Crick

LO12.1: Which scientists built the first correct 3D model of DNA?

• Hershey & Chase

• Avery & McCarty

• Watson & Crick

• Wilkins & Franklin

There are 3 main tasks that DNA must be capable of doing to carry out its function in the cell. Which of the following is not one of them?

• It can store information

• It can easily be copied

• It can easily change information

• It can easily transmit information

What information is DNA responsible for storing?

• The amount of nutrients inside the cell.

• The instructions for making proteins needed to carry out the cell's function.

• The size of the cell.

• The location of the cell in an organism.

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