Ch. 14 - DNA

Frederick Griffith experimented on mice by injecting Streptococcus pneumoniae, a pathogenic bacterium causing pneumonia. He was able to identify a process known as ____ that states that information specifying virulence can be passed from dead strain cells to live strain cells.

• Transformation

• Splicing

• Replication

• Division

The rule of complementarity, or that all complimentary base pairs have the same ratio, was discovered by who?

• Rosalind Franklin

• Watson, Crick

• Chargaff

• Griffith

Watson & Crick are important in understanding DNA because they discovered the -

• Rule of complementarity

• Double helix structure

• Transformation principle

• Nucleic acid role in heredity

Because one original strand of the double stranded DNA helix is found in each daughter cell (after cell division), the DNA replication process is—

• Conservative

• Dispersive

• Semiconservative

All are part of a nucleotide except -

• Pentose sugar

• Nitrogenous base

• Phosphate group

• Fatty acid tail

In what direction is DNA replicated?

• 5' to 3'

• 3' to 5'

Which of the following base pairs are correctly matched for DNA?

• A-C

• C-G

• G-A

• A-U

What would the complementary strand of DNA with the base pairs ATTCGA be?

• ATTCGA

• TAAGCT

• UAAGCU

• TAACGU

Because DNA polymerase can only act from 5'-3', continuous strand growth can be achieved only from the leading strand and growth along the other strand must occur discontinuously, resulting in the production of a series of short sections of new DNA called -

• Replicon fragments

• Okazaki fragments

• Chargoff's fragments

• Splices

The enzyme that creates a short RNA segment at the initiation sites where replication is to be carried out is called—

• Primase

• DNA ligase

• DNA gyrase

• Exonuclease