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.

A. The bacteria are breaking down sugars in the absence of oxygen.

Explanation:

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.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

the denominator has a very specific role.