Table 63 Bacterial Generation Times for Four Different Bacterial Species Were Calculated

question 62

Essay

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?

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Definitions:

Hydrogen Bonds

A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

Anticodons

Sequences of three nucleotides on transfer RNA molecules that are complementary to codons on messenger RNA and ensure the correct amino acids are added during protein synthesis.

Base-pairing Bonds

The hydrogen bonds between complementary nucleotides (adenine with thymine or uracil, and cytosine with guanine) in DNA or RNA.

Transcription

The process of copying a segment of DNA into RNA by the enzyme RNA polymerase.