BIO 30_Quiz 4 Practice

Which of the following is not true of the genetic material according to HJ Muller?

• Can carry all necessary biological information
• It should not mutate.
• Has stable molecular structure.
• It can duplicate itself.

The scientist who observed that an avirulent strain of Streptococcus pneumoniae was transformed to become virulent and declared the presence of the transforming principle.

• Edmund Wilson
• Frederick Griffith
• Ernst Haeckel
• Freidrich Mischer

Who are the scientists who proved that DNA is the genetic material of bacterial viruses (phages)?

• Wilkins and Franklin
• Zinder and Lederberg
• Hershey and Chase
• Avery, MacLeod and McCarty

The components of a DNA nucleotide:

• D-ribose
• Nitrogen base
• Phosphate group
• 2 Deoxy-D-ribose

RNA differs from DNA in that RNA

• is antiparallel
• contains ribose as its sugar
• contains uracil instead of thymine
• is single stranded

The mode of DNA replication:

• conservative
• semi-conservative
• non-conservative
• dispersive

The following proteins/enzymes are needed during initiation of replication except

• ligase
• single strand binding proteins
• gyrase
• helocase

Which is not true about the Okazaki fragments?

• synthesized discontinuously
• provides 3'OH
• 1000-2000 nucleotides in prokaryotes
• short sequences

The leading and lagging strands are synthesized one after the other.

• True/Correct
• False/Incorrect
• None of the above