30 Questions
Which molecule is reduced to form NADH?
Nicotinamide Adenosine Dinucleotide
During cellular respiration, what happens to the carbon atoms of glucose?
They are oxidized to form carbon dioxide
What is the final electron acceptor in aerobic cellular respiration?
Oxygen
What is the first step in glucose oxidation?
Glycolysis
How is ATP produced in glycolysis?
By substrate-level phosphorylation
What is the role of redox reactions in driving ATP formation?
They transfer electrons from one molecule to another
Which process produces ATP from molecules with high potential energy?
Electron Transport Chain and Chemiosmosis
What is the cellular currency for energy?
ATP
What is the function of kinases?
Transferring phosphate groups
What is the source of chemical potential energy in cells?
Electrons
What is the result of hydrolysis of the bond between the two outermost phosphate groups in ATP?
Formation of ADP and Pi
What happens to the released phosphate group during ATP hydrolysis?
It is transferred to a protein
Which process uses oxygen as the final electron acceptor in the electron transport chain?
Oxidative phosphorylation
Which enzyme complex is responsible for the production of ATP from ADP and Pi?
ATP synthase
What is the main function of the electron transport chain?
To transfer electrons to oxygen and form water
What is the most effective electron acceptor in the electron transport chain?
O2
Which process occurs in the absence of oxygen and regenerates NAD+?
Fermentation
How many ATP molecules are produced per glucose molecule in fermentation?
2
Which process produces ATP in glycolysis and the citric acid cycle?
Substrate-level phosphorylation
What is the final electron acceptor in cellular respiration?
Oxygen
Which enzyme catalyzes the synthesis of fructose-1,6-biphosphate in glycolysis?
Phosphofructokinase
Where does pyruvate processing occur in eukaryotic cells?
Mitochondrial matrix
What molecules are produced during pyruvate processing?
Acetyl CoA, NADH, and CO2
Which step of glucose oxidation occurs in the citric acid cycle?
Electron transport chain
Which of the following is true about cellular respiration?
It requires high-energy electrons for generating ATP
What is the main function of catabolic pathways in metabolism?
To break down molecules and produce ATP
Which molecules are commonly used as substrates for cellular respiration?
Proteins, carbohydrates, and fats
What are the intermediates in glycolysis and the citric acid cycle derived from?
Carbohydrates
Which molecules found in carbohydrate metabolism are used to synthesize macromolecules?
Glycogen and starch
In what order do cells use carbohydrates, fats, and proteins for ATP production?
Carbohydrates, fats, proteins
Test your knowledge of ATP production in cellular respiration and the concept of feedback inhibition in this quiz. Learn about the processes of glycolysis, the citric acid cycle, and oxidative phosphorylation.
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