Ch 12-Pre-Quiz

Which is not true regarding bacterial transformation

• Mice injected with live S strain die

• Mice injected with heat killed S strain die

• Mice injected with live R strain bacteria live

• Mice injected with live R and heat killed S die

Which enzyme has an effect on transformation

• DNase

• RNase

• Protease

• All of the above

Who is responsible for the rule that the amounts of A and T are equal and C and G are equal.

• Griffith

• Hershey

• Watson and Crick

• Chargaff

Took a photograph that led to the discovery of the double helix structure of DNA

• Watson and Crick

• Hershey and Chase

• Franklin and Wilkins

• All of the above

Which of the following did Watson and Crick discover

• That DNA is a transforming substance

• That each species has equal amount of A and T and C and G

• That the steps of the DNA ladder are composed of a purine and pyrimidine

• That virulence could be passed from a dead strain to a nonvirulent strain

Which of the following was not proposed in Watson and Cricks model proposal of DNA

• Sugar and phosphate backbone make up the sides

• There are two strands that are antiparallel

• Bases are paired in the middle held with Hydrogen bonds

• There are three strands holding the DNA together

What enzyme is responsible for unwinding and separating DNA

• DNA helicase

• DNA Polymerase

• DNA primase

• DNA ligase

What is the complementary strand to ATC GGA

• TAG GCT

• UAG CCU

• TAG CCU

• TAG CCA

This enzyme is responsible for catalyzing DNA replication

• DNA helicase

• DNA polymerase

• DNA primase

• DNA Ligase

How often does DNA polymerase make a mistake?

• 1 in 10,000

• 1 in 1,000

• 1 in 1,000,000

• 1 in 100,000