Question

1) If you were given a microscope slide with a sample from a habitat rich in bacteria and nitrogen, you would expect to see..

a) peptidoglycan

b) heterocysts

c) filaments

d) halophiles

e) biofilms

2) A research ship catches a fish from the depths of the ocean. In the dark it glows. What are the prokaryotes doing in the fish?

a) decomposing it

b) providing bioluminescence

c) fixing nitrogen

d) photosynthesizing

3) Without prokaryotes...

a) much decomposition in the soil would stop

b) PCR would be much more difficult to do

c) plants would have fewer nutrients to absorb

d) there would be less methane in the world

e) all of the above would occur

4) Which is least likely associated with prokaryotes?

a) nitrogen fixation

b) botulism

c) methane production

d) total global photosynthesis

5) Genetic variation in bacterial populations cannot result from:

a) transduction

b) transformation

c) conjugation

d) mutation

e) meiosis

6) Penicillin is an antibiotic that inhibits the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?

a) mycoplasmas

b) gram-positive bacteria

c) archea

d) gram-negative bacteria

e) endospore-bearing bacteria  

7) Which of the following contains a copy of a bacterial chromosome, along with a small amount of dehydrated cytoplasm, within a tough wall?

a) endospore

b) sex pilus

c) flagellum

d) cell wall

e) capsule

8) Adherence to the intestinal lining by a bacterium is due to the possession of:

a) fimbriae

b) pili

c) endospores

d) flagella

e) cilia

Answer 1

QUESTION 1

In this case, you would find heterocysts. The heterocysts are basically cells that are able to fix nitrogen. Specifically, they are formed during nitrogen starvation. These cells fix the dinitrogen molecule by the action of nitrogenase.

QUESTION 2

In this case, the prokaryotic organisms are providing bioluminescence

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