DNA Lesson 1 and 2 Practice Quiz

This scientist(s) found a "transforming principle" that changed harmless bacteria into harmful bacteria

• Mendel
• Avery
• Chargraff
• Griffith

In the early 1900s, most scientists thought it was _____________ that carried traits form parent to offspring. 

• Carbohydrates
• Lipids
• Proteins
• DNA

This scientist(s) conducted experiments that involved injecting mice with S bacteria and R bacteria.

• Avery
• Griffith
• Watson & Crick
• Hershey & Chase

From his work with mice and pneumonia-causing bacteria, Frederick Griffin coined the term

• Replication
• Transcription
• Transformation
• Translation

By using radioactive isotopes, Hershey and Chase were able to conclude that __ is/are the carrier(s) of genetic information.

• nucleic acid
• Proteins
• Carbohydrates
• Lipids

The work of scientists including Griffin, Avery, Hershey & Chase and Franklin helped us to determine the __ are responsible for carrying genetic material.

• Amino Acids
• Proteins
• Nucleic Acids
• Carbohydrates

Griffith discovered that

• DNA is different than RNA.
• adenine = thymine.
• bacteria can transfer DNA.
• DNA is the genetic molecule.

What organism was Griffith using when he discovered that a harmless strain of bacteria could transform into a lethal strain of bacteria?

• pea plants
• fruit flies
• bacteriophages
• mice

Who FIRST showed that DNA was the transforming factor?

• Griffith

• Avery

• Chargaff

• Franklin

Which scientists used viruses and radioactive isotopes to definitively prove that DNA, and not protein, was the molecule of heredity?

• Griffith and Avery
• Chargaff and Franklin
• Watson and Crick
• Hershey and Chase