Genetics Unit: Section 12 Quiz

The process by which one strain of bacterium is changed into another strain is called...

• transcription

• transformation

• duplication

• replication

Bacteriophages are...

• a form of bacteria

• enzymes

• coils of DNA

• viruses

Which of the following researchers used radio-active markers in experiments to show that DNA was the genetic material in cells?

• Alfred Hershey and Martha Chase

• Frederick Griffith

• Oswald Avery

• James Watson and Francis Crick

Before DNA could definitely be shown to be the genetic material in cells, scientists had to show that it could...

• tolerate high temperatures

• be modified in response to environmental conditions

• be broken down into small subunits

• carry and make copies of information

Frederick Griffith's experiment involved which test subject?

• fish

• bacteria

• mice

• bacterium

A nucleotide does NOT contain...

• a 5-carbon sugar

• an amino acid

• a nitrogen base

• a phosphate group

According to Chargaff's rule of base pairing, which of the following is true about DNA?

• A = T and C = G

• A = C and T = G

• A = G and T = C

• A = T = C = G

Which of the following does NOT describe the structure of DNA?

• double helix

• contains adenine-guanine pairs

• nucleotide polymer

• sugar-phosphate backbone

The two "backbones" of the DNA molecule consist of...

• adenines and sugars

• adenines and thymines

• thymines and sugars

• phosphates and sugars

What type of bonds hold DNA together?

• ionic bonds

• covalent bonds

• hydrogen bonds

• static bonds