PARTA
Which of the following best describes the process by which the bacteria are breaking down the glucose to produce
lactic acid?
A The bacteria are breaking down sugars in the absence of oxygen.
B The bacteria are creating a H+ gradient to synthesize more ATP.
The bacteria are using their mitochondria to break down glucose in the presence of oxygen.
The bacteria are producing CO2 in the Krebs cycle that is then converted into lactic acid.

Bacteria are microscopic single-celled organims. These organisms may produce their own source of chemical energy, or consume and absorb chemical energy made by producers.

They break down chemical energy like glucose through lactic acid fermentation in their cytoplasm, without the presence of oxygen.

In Glycolysis:

2 molecules of ATP are used to break up glucose into 2 molecules of pyruvate, 4 ATP and 2 electron carrying NADH molecules. Since 2 ATP are used, a net 2ATP are produced by this process.

Then, pyruvate is converted to lactic acid, producing 2 NAD+, used as electron carriers.

Oseni Oseni · Answer 2 · 2021-10-11T14:30:49+02:00

The option that best describes the process by which bacteria break down glucose to produce lactic acid is when bacteria break down sugars in the absence of oxygen. The correct option would, thus, be A.

Bacteria are capable of breaking sugars to generate energy, a process known as respiration.

This respiration can either be in the presence (aerobic) or absence (anaerobic) of oxygen.

Aerobic respiration has 3 major steps:

sugar is converted to pyruvates with the generation of ATP - glycolysis
pyruvates enter the Kreb's cycle to generate ATP and other molecules such as FADH2 and NADH
FADH2 and NADH produced in Kreb's cycled are used to move electrons and generate energy in the electron transport chain.

Both the 2nd and 3rd steps in aerobic respiration require oxygen and the summary of the entire process is in the following equation:

[tex]C_6H_1_2O_6 + 6 O_2 ---------> 6 CO_2 + 6 H_2O + ATP[/tex]

In the absence of oxygen, only glycolysis occurs and the pyruvates generated are quickly converted to lactic acid to generate a small amount of ATP according to the following equation:

Pyruvic acid + NADH <---> lactic acid + NAD+

More on anaerobic respiration can be found here: https://brainly.com/question/12605249