Question

Match each enzyme of glycolysis with its description.

a) Hexokinase
b) Phosphofructokinase
c) Pyruvate kinase
d) Aldolase

i. Converts fructose-6-phosphate to fructose-1,6-bisphosphate.
ii. Converts glucose to glucose-6-phosphate.
iii. Converts phosphoenolpyruvate to pyruvate.
iv. Converts fructose-1,6-bisphosphate to dihydroxyacetone phosphate and glyceraldehyde-3-phosphate.

Answer 1

In glycolysis, hexokinase converts glucose to glucose-6-phosphate, phosphofructokinase transforms fructose-6-phosphate to fructose-1,6-bisphosphate, aldolase breaks fructose-1,6-bisphosphate into two three-carbon molecules, and pyruvate kinase converts phosphoenolpyruvate to pyruvate.

Step-by-step explanation:

Each enzyme in glycolysis has a specific function, and they can be matched to their corresponding descriptions as follows:

1. Hexokinase (a) matches description (ii), as it converts glucose to glucose-6-phosphate.
2. Phosphofructokinase (b) aligns with description (i), converting fructose-6-phosphate to fructose-1,6-bisphosphate.
3. Aldolase (d) corresponds to description (iv), it breaks down fructose-1,6-bisphosphate into dihydroxyacetone phosphate and glyceraldehyde-3-phosphate.
4. Pyruvate kinase (c) associates with description (iii), as it converts phosphoenolpyruvate to pyruvate.

Each of these enzymes plays a crucial role in glycolysis, enabling the transformation of glucose through various intermediates to ultimately produce pyruvate, which can be further utilized in cellular respiration for energy production.