In eukaryotes, this pathway takes place in the inner mitochondrial membrane. In prokaryotes it occurs in the plasma membrane. The electron transport chain is made up of 4 proteins along the membrane and a proton pump. A cofactor shuttles electrons between proteins I—III. Click here for a text-only version of the activity. Improve this page Learn More. Skip to main content. Module 6: Metabolic Pathways. Search for:. Cellular Respiration Cellular respiration is a process that all living things use to convert glucose into energy.
Glycolysis Glycolysis is the first pathway in cellular respiration. Pyruvate Oxidation In eukaryotes, pyruvate oxidation takes place in the mitochondria.
Citric Acid Cycle The citric acid cycle also known as the Krebs cycle is the second pathway in cellular respiration, and it also takes place in the mitochondria. Did you have an idea for improving this content? Correct answer: Cytosol. Explanation : Glycolysis happens in the cytosol the fluid containing the organelles of the cell.
Report an Error. Example Question 2 : Cellular Respiration. Which of the following reflects a function of fermentation? It leads to the production of ethanol in muscle cells. It leads to the production of lactic acid in yeast cells. Fermentation leads to the production of ethanol in yeast cells and lactic acid in muscle cells. Example Question 3 : Cellular Respiration. Explanation : Glycolysis occurs in the cytosol of cells. Example Question 1 : Understanding Glycolysis.
How many direct ATP are made if fructose-1,6-bisphosphate is put through glycolysis? Possible Answers: 4. Correct answer: 4. Explanation : The conversion of glucose to two pyruvate molecules in glycolysis produces a net total of two direct ATP.
Example Question 5 : Cellular Respiration. Which of the following products is not created during glycolysis? Possible Answers: Oxygen. Correct answer: Oxygen. Explanation : Glycolysis is the first step in cellular respiration, and is seen in both aerobic and anaerobic respiration. Example Question 6 : Cellular Respiration. Which of the following processes does not take place during glycolysis?
One molecule of glucose eventually yields two molecules of pyruvate. Correct answer: Via a complex chain of steps, and transfer electrons to the process's final electron acceptor,. Explanation : Glycolysis, which occurs in the cytoplasm, is the first step of cellular respiration.
Example Question 7 : Cellular Respiration. Possible Answers: acetaldehyde. Correct answer: adenosine triphosphate. Explanation : Fermentation is the metabolic process that takes place in anaerobic environments to regenerate for glycolysis, which takes place in both aerobic and anaerobic environments. Example Question 8 : Cellular Respiration. Explanation : Glycolysis takes place in the cell cytosol, and can take place under anaerobic conditions.
Example Question 9 : Cellular Respiration. Possible Answers: Oxidative phosphorylation. Correct answer: Glycolysis. Explanation : Glycolysis is the process that converts glucose to pyruvate. What is the net production of ATP from one glucose molecule in glycolysis?
Possible Answers:. Correct answer:. The answer is cellular respiration. This process releases theenergy in glucose to make ATP adenosine triphosphate , the molecule that powers all the work of cells.
Cellular respiration involves many chemical reactions. The reactions can be summed up in this equation:. The reactions of cellular respiration can be grouped into three stages: glycolysis stage 1 , the Krebs cycle , also called the citric acid cycle stage 2 , and electron transport stage 3.
Figure below gives an overview of these three stages, which are further discussed in the concepts that follow. Glycolysis occurs in the cytosol of the cell and does not require oxygen, whereas the Krebs cycle and electron transport occur in the mitochondria and do require oxygen.
Cellular respiration takes place in the stages shown here. The process begins with a molecule of glucose, which has six carbon atoms. What happens to each of these atoms of carbon? The structure of the mitochondrion is key to the process of aerobic in the presence of oxygen cellular respiration, especially the Krebs cycle and electron transport.
A diagram of a mitochondrion is shown in Figure below. The structure of a mitochondrion is defined by an inner and outer membrane.
This structure plays an important role in aerobic respiration.
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