05.2 A (pg.126-128)

What is the first set of reactions in cellular respiration known as?

• Pyruvic acid cycle

• Electron transport chain

• Glycolysis

• Krebs cycle

How many molecules of pyruvic acid are produced from 1 molecule of glucose during glycolysis?

• 1

• 3

• 4

• 2

How many ATP molecules are used at the onset of glycolysis?

• 1

• 2

• 3

• 4

What is the molecule that accepts a pair of high-energy electrons and a hydrogen ion during glycolysis?

• NADH

• FAD

• NAD+

• NADP+

How many ATP molecules are synthesized from 4 ADP molecules during glycolysis?

• 4

• 2

• 1

• 3

What is the advantage of glycolysis in the absence of oxygen?

• It produces more ATP

• It produces less carbon dioxide

• It is faster

• It requires less energy

What is the second stage of cellular respiration after glycolysis?

• Krebs cycle

• Electron transport chain

• Glycolysis

• Pyruvic acid cycle

Where does the Krebs cycle take place in the cell?

• Mitochondrion

• Nucleus

• Cytoplasm

• Endoplasmic reticulum

What is the first compound formed in the series of reactions during the Krebs cycle?

• Coenzyme A

• Citric acid

• Acetic acid

• Pyruvic acid

Why is the Krebs cycle called a 'cycle'?

• It involves circular movement of molecules

• It produces a circular molecule

• It repeats the same reactions

• It forms a cycle of ATP production