ILE Terms Study

Which of the following best describes the events that occur during glycolysis?

Glucose molecules are split into two pyruvate molecules, resulting in a net production of two ATP molecules and two NADH molecules.

Which of the following is true for how fats and oils can enter into the aerobic cellular respiration pathways?

Glycerol can enter into glycolysis and fatty acids can enter into the preparatory reactions.

Select all of the stages of respiration in which proteins may enter into the cellular respiration pathways.

Glycolysis The citric acid cycle Preparatory reactions

Which of the following lists the correct order of stages in the process of cellular respiration?

Glycolysis, prep reactions, citric acid cycle, electron transport chain

Which of the following best describes the events that occur during electron transport chain?

High energy electron carriers are used to pump hydrogen ions across the membranes in the mitochondria, creating a gradient that is then used to regenerate ATP molecules. Water is also formed.

The bulk of ATP molecules are produced during which phase of cellular respiration?

The citric acid cycle The electron transport chain

Which of the following processes occur within the mitochondria of the cell and generate ATP? Select all that apply.

The electron transport chain The citric acid cycle

Match the following energy-producing stages of cellular respiration with the processes that occur in each. One stage does not produce any ATP energy.

The preparatory reactions - This stage does not produce any ATP energy. The citric acid cycle - This stage breaks down all the remaining C-C bonds in the original glucose molecule, resulting in the production of ATP and high-energy electron carriers. The electron transport chain - This stage uses high-energy electron carriers to shuttle electrons down a membrane, creating a proton gradient. This gradient is used to generate ATP molecules.

At the end of the citric acid cycle, the remaining carbon-carbon bonds in the original glucose molecule have been broken down. Some are recycled back into the cycle to start again. What is the fate of the other carbon atoms?

They are released as four molecules of carbon dioxide gas.

Which of the following best describes the purpose of the preparatory reactions?

They modify pyruvate molecules into a form that can enter the citric acid cycle to be broken down completely.

Fats and oils produce more molecules of ATP compared to glucose.

True

Select all of the following that are true of the two steps of glycolysis.

Two ATP molecules are required in order to produce four ATP molecules. The energy-investment steps are first and the energy-harvesting steps are second.

Which of the following best describes the events that occur during the citric acid cycle?

Two acetyl CoA molecules enter a cyclic reaction that breaks all remaining C-C bonds, resulting in carbon dioxide production, ATP production, and the production of the high energy electron carriers.

Which of the following best describes the events that occur during the preparatory reactions?

Two pyruvate molecules are modified into two molecules of acetyl CoA.

Where does glycolysis occur within the cell?

cytoplasm

Lipids and proteins are not able to enter into the aerobic pathways of cellular respiration. They can only be metabolized through anaerobic fermentation pathways.

false

The stage of cellular respiration where glucose molecules are initially broken down is called

glycolysis

Place the following stages of cellular respiration in the order in which they occur.

glycolysis, The preparatory reactions, the citric acid cycle, the electron transport chain

The final electron acceptor during the electron transport chain is _____ and it accepts two hydrogen ions to form _____.

oxygen, water

The bulk of ATP generated during the electron transport chain are generated directly by

protons moving down their concentration gradient through the ATP synthase enzyme.