Question

1) A researcher discovers a new species of bacteria that obtains its energy from other organisms and its carbon from the atmosphere. This species can be categorized based upon its mode of nutrition as a: chemoheterotroph, photoautrotroph, photoheterotroph, or chemoautotroph?

2) A colony of antibiotic-resistant bacteria is mixed with a colony of antibiotic-sensitive bacteria. After a few days grown in the presence of

antibiotics, all of the bacteria are resistant to the antibiotic. Which of these is most likely to result in this rapid spread of resistance in a

bacterial population?

a) binary fission

b) transformation

c) conjugation

d) transduction

3) Which one of the statements below is TRUE for bacterial conjugation?

a) it doesn't increase genetic diversity of bacteria

b) there are male and female bacteria involved in bacterial conjugation

c) it creates a new combination of genetic material

d) it produces new individuals

4) A researcher discovers a new species of bacteria that obtains its energy via cellular respiration of NH3, and its carbon via the Calvin Cycle. This species can be categorized based upon its mode of nutrition as a:

a) photoheterotroph

b) chemoorganoheterotroph

c) chemoorganoautotroph

d) chemolithoautotroph

5) The Earth’s early atmosphere was ______________. This changed when some bacteria evolved the ability to __________, which releases oxygen.

a) anaerobic/photosynthesize

b )aerobic/ferment

c) anaerobic/fermen

d) aerobic/photosynthesize

6) Nitrogen, a necessary element for the synthesis of amino acids and nucleic acids, makes up about 78% of the

atmosphere. It is available to organisms through the process of nitrogen fixation carried out only by:

a) plants

b) fungi

c) bacteria

d) animals

e) all of the above

Answer 1

1. Chemoheterotrophs

2. Conjugation

3. Creates new combination of genetic material.

4. Chemoorganoheterotrophs

5. Anaerobic/ Photosynthesize

6. Bacteria