Question

explain the effect oxygen and PH on bacterial nutrition​

Answer 1

Yogurt, pickles, sauerkraut, and lime-seasoned dishes all owe their tangy taste to a high acid content (Figure 1). Recall that acidity is a function of the concentration of hydrogen ions [H+] and is measured as pH. Environments with pH values below 7.0 are considered acidic, whereas those with pH values above 7.0 are considered basic. Extreme pH affects the structure of all macromolecules. The hydrogen bonds holding together strands of DNA break up at high pH. Lipids are hydrolyzed by an extremely basic pH. The proton motive force responsible for production of ATP in cellular respiration depends on the concentration gradient of H+ across the plasma membrane (see Cellular Respiration).

Answer 2

Answer:

The effect of oxygen and pH on bacterial nutrition varies from bacteria to bacteria.

Explanation:

1) The effect of pH on bacterial nutrition is as follows:

Most of the bacteria thrive at the neutral pH of 7. However, there are extremophiles which can live at pH other than 7. Acidophiles can grow only in acidic conditions.

2) The effect of oxygen on bacterial nutrition is as follows:

There are three types of bacteria:

• Aerobic bacteria: The ones that can only grow in the presence of oxygen.
• Anaerobic bacteria: The ones that prefer an environment lacking oxygen.
• Facultative bacteria: The bacteria that can change their mode of respiration based on the environment.