(TCO 1) The swan-necked flasks of Pasteur’s experiments

Student Answer: allowed for airflow without allowing the introduction of

environmental microbes.

turned the flask cloudy.

contributed to supporting the theory of spontaneous generation.

allowed the flasks to temporarily turn cloudy and then become

clear after a period of time.

All of the above

Instructor

Explanation:

Chapter 1, The Golden Age of Microbiology section

Points Received: 2 of 2

Comments:

Question 2

.

Question :

(TCO 1) Which of the following is NOT a characteristic of algae?

Student Answer: They reproduce asexually by budding.

They may be single celled or multicellular.

They are photosynthetic.

They are eukaryotic organisms.

They provide much of the world’s oxygen.

Instructor

Explanation:

Chapter 1, The Early Years of Microbiology section

Points Received: 2 of 2

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Comments:

Question 3

.

Question :

(TCO 1) What is metabolism?

Student Answer: It is a calculation of how quickly food can be broken down.

It is the building of more complex structures from subunits in an

organism.

It is the sum of all of the chemical reactions in an organism.

It is the breakdown of large molecules into individual subunits.

It is the production of glucose by a plant cell.

Instructor

Explanation:

Chapter 1, The Golden Age of Microbiology section

Points Received: 2 of 2

Comments:

Question 4

.

Question :

(TCO 1) Why are microorganisms so important to our ecosystems?

Student Answer: They enrich soil.

They degrade wastes.

They support life.

None of the above

All of the above

Instructor

Explanation:

Chapter 1, Introduction page

Points Received: 2 of 2

 2 / 4

Comments:

Question 5

.

Question :

(TCO 2) Photosynthetic bacteria

Student Answer: produce glucose and oxygen.

may also be nitrogen fixers.

have chloroplasts.

cannot tolerate oxygen in their environment.

all have heterocysts.

Instructor

Explanation:

Chapter 11, Survey of Bacteria section

Points Received: 0 of 2

Comments:

Question 6

.

Question :

(TCO 2) Which of the following statements is NOT true about

endospores?

Student Answer: They are reproductive structures.

They are formed by the Clostridium species.

They may be classified as central, subterminal, or terminal.

They are formed when conditions are suboptimal.

Endospore-forming bacteria cause tetanus and anthrax.

Instructor

Explanation:

Chapter 11, General Characteristics of Prokaryotic Organisms section

Points Received: 2 of 2

 3 / 4

Comments:

Question 7

.

Question :

(TCO 2) What is the potential overall magnification of a microscope that

has a 10X ocular lens and a 40X objective lens?

Student Answer: 10X

40X

390X

400X

410X

Instructor

Explanation:

Chapter 4, Microscopy section

Points Received: 2 of 2

Comments:

Question 8

.

Question :

(TCO 2) Which type of microscope would best be used to look at the

atomic level?

Student Answer: Phase contrast microscope

Dark-field microscope

Scanning tunneling microscope

Scanning electron microscopes

Confocal microscope

Instructor

Explanation:

Chapter 4, Microscopy section

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