Question 1

When cultivating anaerobic organisms in the laboratory setting,a candle jar is sufficient for the vast majority of organisms.

Accepted Answer

A) True 
 B)False

Question 2

The source of nutrients in nutrient agar is

Accepted Answer

A)  agar.
B)  gelatin.
C)  peptone and beef extract.
D)  peptone and NaCl.
E)  agar and NaCl.F) A) and C)
G) B) and D)

Question 3

Which of the following elements is NOT correctly matched with its cellular function?

Accepted Answer

A)  nitrogen - needed for amino acid synthesis
B)  phosphorus - incorporated into nucleic acids
C)  sulfur - used for synthesis of thiamin and biotin
D)  magnesium and potassium - required as cofactors for enzymes
E)  phosphorus - used for production of carbohydrates.F) B) and E)
G) All of the above

Question 4

Figure 6.1
 
-In Figure 6.1,which line best depicts a psychrotroph incubated at 0°C?

Accepted Answer

A)  a
B)  b
C)  cD) A) and B)
E) A) and C)

Question 5

Table 6.3
 \[\begin{array} {| l | c | c | c | c| } 
\hline &{ \text { Generation Time } } \
\hline{ \text { Medium } } & \text { Escherichia coli } & \begin{array} { c } 
\text { Pseudomonas } \
\text { aeruginosa }
\end{array} & \text { Lactobacillus } & \text { Nitrobacter } \
\hline \mathrm { NaCl } , \mathrm { NO _3} ^ { - } , \mathrm { MgSO } _ { 4 } & 0 & 0 & 0 & 80 \
\hline \text { Glucose } & 100 & 0 & 0 & 0 \
\hline \text { Glucose, } \mathrm { NaCl } , \mathrm { PO } _ { 4 } { } ^ { 3 - } & 56 & 200 & 0 & 0 \
\hline \text { Glucose, } \mathrm { NaCl } , \mathrm { PO } _ { 4 } ^ { 3 - } , \mathrm { MgSO } _ { 4 } & 43 & 100 & 0 & 0 \
\hline \begin{array} { l } 
\text { Glucose, } \mathrm { NaCl } , \mathrm { PO } _ { 4 } ^ { 3 - } , \mathrm { MgSO } _ { 4 } \
8 \text { amino acids }
\end{array} & 28 & 40 & 0 & 0 \
\hline \begin{array} { l } 
\text { Glucose, } \mathrm { NaCl } , \mathrm { PO } _ { 4 } ^ { 3 - } , \mathrm { MgSO } _ { 4 } \
19 \text { amino acds }
\end{array} & 25 & 25 & 80 & 0 \
\hline
\end{array}\] 
Bacterial generation times for four different bacterial species were calculated in the media listed in Table 6.3.All media were prepared with pure distilled water and incubated aerobically in the light.Compare and contrast the growth requirements of the four bacteria listed above.Which of the media,if any,are chemically defined?

Accepted Answer

The growth requirements of the four bact...

Exam 6: Microbial Growth

When cultivating anaerobic organisms in the laboratory setting,a candle jar is sufficient for the vast majority of organisms.

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Which of the following elements is NOT correctly matched with its cellular function?

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The source of nutrients in nutrient agar is

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The growth requirements of the four bact...
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Figure 6.1 -In Figure 6.1,which line best depicts a psychrotroph incubated at 0°C?

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Exam 6: Microbial Growth

When cultivating anaerobic organisms in the laboratory setting,a candle jar is sufficient for the vast majority of organisms.

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Which of the following elements is NOT correctly matched with its cellular function?

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The source of nutrients in nutrient agar is

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Correct AnswerAnswered by ExamLex AIThe growth requirements of the four bact...View AnswerShow Answer

Figure 6.1 -In Figure 6.1,which line best depicts a psychrotroph incubated at 0°C?

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Correct Answer
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Correct Answer
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The growth requirements of the four bact...
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