Question

In glycolysis, glucose molecules are converted into which substance?
A. Lactic Acid
B. Ethanol
C. Pyruvate
D. Amino acid

Answer 1

All organisms contain an enzyme-based system that aids in glucose oxidation without the use of oxygen. The breakdown of glucose is referred to as glycolysis. The glucose utilised by plants comes from either the sucrose produced during photosynthesis or the stored carbohydrate. Glycolysis is the only method of respiration used by anaerobic organisms. Glycolysis takes place in the cell's cytoplasm.

Complete answer:
The EMP route is another name for the glycolysis process.
In the presence of hexokinase and $Mg$ , glucose is broken down into glucose $- 6 -$ phosphate, which is then isomerized to fructose $- 6 -$ phosphate in the presence of phosphate isomerase.
Now, in the presence of phosphofructokinase, this fructose-6-phosphate is changed to fructose- $1,6 -$ bisphosphate, which breaks into $3 -$ phosphoglyceraldehyde ( $3$ PGAL) and dihydroxyacetone phosphate (DHAP), which are interconvertible.
The production of $1,3 -$ diphosphoglycerate from $3 -$ PGAL is catalysed by phosphoglycerate kinase in the next step.
$3 -$ phosphoglycerate is transformed to $2 -$ phosphoglycerate and phosphoenolpyruvate as a result (PEP). Pyruvate kinase catalyses the production of pyruvate and liberates ATP using PEP.
Hence, the correct option is C. Pyruvate.

Note:
The common phase of aerobic and anaerobic respiration is glycolysis. It is a set of ten biological events that take place in the cytoplasm. Ten enzymes are used in this process, resulting in $11$ substrates. Phosphorylation is the process of converting glucose to fructose $1,6 -$ bisphosphate.