Microbes in Aquatic Environment – Section 1

11. Which of the following is correct?

A. All members of Hyphomycetes are also members of Fungi, but not all members of Fungi are members of Hyphomycetes
B. All members of Fungi are also members of Hyphomycetes, but not all members of Hyphomycetes are members of Fungi
C. All members of Hyphomycetes are members of Fungi, and all members of Fungi are members of Hyphomycetes
D. No member of Hyphomycetes is a member of Fungi

Correct Answer: A. All members of Hyphomycetes are also members of Fungi, but not all members of Fungi are members of Hyphomycetes

12. The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer

A. greater
B. lesser
C. approximately equal to
D. half

Correct Answer: A. greater

13. Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except

A. Clostridium
B. Rhodospirillum
C. Chlorobium
D. Escherichia

Correct Answer: D. Escherichia

14. Because it can be used with a variety of media and allow a resuscitation step the __________ technique has become the common and often preferred method of evaluating the microbiological characteristics of water.

A. most probable number
B. Winogradsky
C. MUG
D. membrane filtration

Correct Answer: D. membrane filtration

15. Which of the following is correct?

A. A Winogradsky column is used to filter out microorganisms from a water sample taken from a deep black smoker
B. A Winogradsky column is used to demonstrate interactions and gradients that occur in aquatic environments
C. Both (a) and (b)
D. A Winogradsky column is used to filter out microorganisms from non-aquatic environments

Correct Answer: B. A Winogradsky column is used to demonstrate interactions and gradients that occur in aquatic environments

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