32 Questions
Where does glycolysis take place?
Cytoplasm
What is the end product of the Krebs Cycle?
There is no final end product
Where are the high-energy electrons passed to in the Electron Transport Chain?
Inner membrane of mitochondrion
What is the first stage of glycolysis?
Glucose
Which of the following is NOT one of the main stages of cellular respiration?
Fermentation
Where does the Krebs Cycle take place?
Mitochondrion
Where does the electron transport chain (ETC) take place in eukaryotic cells?
Inner mitochondrial membrane
Which molecule donates high-energy electrons to the electron transport chain?
NADH
Which complex is the first protein complex in the electron transport chain, where NADH donates electrons?
Complex I (NADH dehydrogenase)
Which molecule accepts the electrons from Complex I and shuttles them to the next complex in the electron transport chain?
Coenzyme Q (Ubiquinone)
Which complex is directly associated with the citric acid cycle and can accept electrons from FADH₂?
Complex II (Succinate Dehydrogenase)
What is the final protein complex in the electron transport chain?
Complex IV (Cytochrome c Oxidase)
What is the terminal electron acceptor in the electron transport chain?
$O_2$ (oxygen)
What does ATP synthase use to synthesize ATP from ADP and inorganic phosphate?
Proton gradient
Where are protons actively pumped across during the electron transport chain, creating a proton gradient?
Inner mitochondrial membrane
Which molecule is a mobile electron carrier that accepts electrons from both Complex I and Complex II and shuttles them to the next complex?
Coenzyme Q (Ubiquinone)
Which stage of cellular respiration does not produce a final end product?
Kreb’s Cycle
In which organelle does the Krebs Cycle occur?
Mitochondrion
Where does glycolysis take place?
Cytoplasm
What is the role of NADH and FADH2 in cellular respiration?
To accept high-energy electrons
Where are the high-energy electrons passed to in the Electron Transport Chain?
Inner membrane of mitochondrion
What is the primary function of ATP synthase in cellular respiration?
To convert ADP into ATP
Which protein complex in the electron transport chain is directly associated with the citric acid cycle and can accept electrons from FADH₂?
Complex II
Where are protons actively pumped across during the electron transport chain, creating a proton gradient?
Inner mitochondrial membrane
Which molecule is a mobile electron carrier that accepts electrons from both Complex I and Complex II and shuttles them to the next complex in the electron transport chain?
Coenzyme Q (Ubiquinone)
What is the terminal electron acceptor in the electron transport chain?
Oxygen (O₂)
Where does the Krebs Cycle take place?
Mitochondrial matrix
What does ATP synthase use to synthesize ATP from ADP and inorganic phosphate?
Protons
Which of the following is NOT one of the main stages of cellular respiration?
Photosynthesis
Where does glycolysis take place?
Cytosol
Which complex is the first protein complex in the electron transport chain, where NADH donates electrons?
Complex I (NADH Dehydrogenase)
Where does the electron transport chain (ETC) take place in eukaryotic cells?
Inner mitochondrial membrane
Learn about the major features and sequence of chemical events in cellular respiration, focusing on the three main stages: Glycolysis, Kreb’s Cycle, and Electron Transport Chain. Gain insights into the chemical reactions and processes involved in each stage.
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