Question

The following sentences describe some glycolysis reactions. Fill in the blanks. Note that a single red X will appear if you answer any of the blanks incorrectly. Feedback will be placed next to a blank that is incorrectly filled. Not all the terms will be placed. Some terms will be used more than once.In the first reaction of glycolysis, glucose is converted to ________. The phosphate from __________. A _______ is an enzyme that transfers the terminal phosphate of __________ to a substrate. The product of this reaction is then to __________ fructose-6-phosphate. Fructose-6-phosphate is then phosphorylated by a second ________ reaction, giving _________.

Answer 1

Answer:

The correct answer will be

1. Glucose is converted to glucose-6-phosphate.

2. A hexose kinase is an enzyme.

3. Terminal phosphate of ATP to a substrate.

4. The product of this reaction is then to form isomer fructose-6-phosphate.

5. Fructose-6-phosphate is then phosphorylated by a second phosphate ester synthesis reaction,

6. giving fructose-1,6 bisphosphate.

Explanation:

Glycolysis is a sequential breakdown of glucose into product pyruvate releasing energy in the form of ATP and NADPH. This reaction takes place in ten steps in which the first three steps are ATP consuming reactions while last steps yield ATP molecules.

Step 1: includes the breakdown of glucose to glucose-6-phosphate in the presence of enzyme hexose kinase which helps in the transfer of phosphate group from ATP to intermediate formed. This reaction is known as Phosphate ester synthesis.

Step 2: includes isomerization of glucose-6-phosphate to fructose-6-phosphate which is again broken down to fructose-1,6-bisphosphate by phosphofructokinase which again transfers a phosphate group from ATP. This is also a Phosphate ester synthesis reaction.

Thus, filled options are the correct answer.