Glycolysis Investment Phase Quiz

What does the term 'glycolysis' mean?

• Formation of glucose

• Breakdown of glucose

• Synthesis of pyruvate

• Conversion of ATP to ADP

Which enzyme is responsible for trapping glucose in the cell during the first step of glycolysis?

• Phosphofructokinase

• Triose phosphate isomerase

• Hexokinase

• Aldolase

What is the main purpose of adding a phosphate group to glucose in the first step of glycolysis?

• To trap glucose inside the cell

• To convert glucose into pyruvate

• To allow glucose to exit the cell

• To stabilize the glucose molecule

Which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate?

• Hexokinase

• Phosphoglucose isomerase

• Phosphofructokinase

• Aldolase

What type of isomerization occurs during the conversion of glucose-6-phosphate to fructose-6-phosphate?

• Geometric isomerization

• Optical isomerization

• Constitutional isomerization

• Stereoisomerization

Which step in glycolysis is considered the rate-limiting step?

• Step 3

• Step 4

• Step 1

• Step 2

What is the role of phosphofructokinase in glycolysis?

• It converts glucose to glucose-6-phosphate

• It converts DHAP to G3P

• It adds a second phosphate group to fructose-6-phosphate

• It splits fructose-1,6-bisphosphate into two molecules

What are the two molecules formed when fructose-1,6-bisphosphate is split?

• Glucose and fructose

• Two molecules of pyruvate

• DHAP and G3P

• Two molecules of G3P

Which enzyme is responsible for converting DHAP to G3P?

• Phosphofructokinase

• Triose phosphate isomerase

• Aldolase

• Hexokinase

Why is triose phosphate isomerase considered a 'perfect' enzyme?

• It is unique to glycolysis

• It requires no energy input

• It catalyzes irreversible reactions

• It has a high turnover rate and efficiency