POB Ch. 7

What are the input requirements of glycolysis? FAD, NAD+, glucose, and ADP ATP, NAD+, glucose, and NADH pyruvates, NADH, and ADP ATP, NAD+, glucose, and ADP

ATP, NAD+, glucose, and ADP

Choose the one correct statement Glycolysis breaks glucose down to two pyruvate molecules. Glycolysis is a reduction reaction where only glucose is reduced. Glycolysis is a cyclical reaction. Glycolysis occurs twice per glucose molecule. Glycolysis results in the release of carbon dioxide.

Glycolysis breaks glucose down to two pyruvate molecules.

Why do organisms without oxygen need to convert pyruvate to lactate? because lactate is needed to produce ATP in order to regenerate NAD+ because pyruvate is toxic to the cells in order to use lactate in the citric acid cycle

in order to regenerate NAD+

Which molecules are the reactants or substrates for aerobic respiration? carbon dioxide and water glucose and carbon dioxide oxygen and glucose glucose and water

oxygen and glucose

What role does NAD+ play in cellular respiration? t provides the oxygen. It is a coenzyme. It provides the energy. It is an enzyme.

It is a coenzyme.

Which of the following statements is NOT true? Aerobic respiration uses oxygen and releases carbon dioxide. The citric acid cycle begins and ends with pyruvate. NADH2 will eventually produce three ATP molecules. The end product of glycolysis is pyruvate.

The citric acid cycle begins and ends with pyruvate.

Which stage(s) will produce carbon dioxide in cellular respiration? glycolysis preparatory reaction citric acid cycle both glycolysis and the electron transport chain both the preparatory reaction and the citric acid cycle

both the preparatory reaction and the citric acid cycle

Cellular respiration does NOT include which of the following events? citric acid cycle electron transport chain glycolysis light reactions preparatory reaction (prep)

light reactions

Muscles undergo fermentation when no oxygen is available. no ATP is available. no carbon dioxide is available. no pyruvate is available

no oxygen is available.

Why does chemiosmosis require a membrane? because the phospholipids are involved in the electron transport chain to anchor proteins within the mitochondria to separate two compartments of the cell to allow for gradient formation to generate H+ from water

to separate two compartments of the cell to allow for gradient formation