Part B. Brief Answers, Choose 5 out of 6 to answer. If you answer all 6, the last question will automatically be skipped for grading. 5 points each, 25 points in total.

1, Compare

prokaryotic and eukaryotic microbes in the following aspects:

• DNA location and organization – Where

  is DNA found? Is it circular or linear?

•  

  Membrane-bound organelles – Which

  organelles are present or absent?

•  

  Shared vs. different structures –

  Which structures do both have Which are unique? Give at least one example.

•  

  Size and complexity – How do their

  sizes and levels of complexity compare?

•  

  Examples of organisms – Give at least

  one example of a prokaryote and one eukaryote.

2,

Based on the figure above

showing bacterial growth in a solid medium tube, describe the

•  Name the microbial type

  (e.g., obligate aerobe, facultative

  anaerobe, etc).

•  Explain the growth pattern

  (where in the tube they grow and

  why).

•  Discuss the effect of oxygen

  (Is oxygen toxic? Can they use oxygen

  for aerobic respiration? Do they rely on fermentation instead?).

a,

b,

c,

d,

e,