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2021-05-14

Where does glycolysis Krebs cycle and electron transport chain occur?

Where does glycolysis Krebs cycle and electron transport chain occur?

mitochondria

Which of the 3 steps of cellular respiration makes the most ATP?

You have seen how the three stages of aerobic respiration use the energy in glucose to make ATP. How much ATP is produced in all three stages combined? Glycolysis produces two ATP molecules, and the Krebs cycle produces two more.

What are the disadvantages of aerobic respiration?

Aerobic respiration also has advantages and disadvantages:

  • Advantages: Aerobic respiration generates a large amount of ATP.
  • Disadvantages: Aerobic respiration is relatively slow and requires oxygen.

What is the benefit of aerobic respiration?

A major advantage of aerobic respiration is the amount of energy it releases. Without oxygen, organisms can split glucose into just two molecules of pyruvate. This releases only enough energy to make two ATP molecules. With oxygen, organisms can break down glucose all the way to carbon dioxide.

What are the pros and cons of aerobic and anaerobic respiration?

Summary. Aerobic and anaerobic respiration each have advantages under specific conditions. Aerobic respiration produces far more ATP, but risks exposure to oxygen toxicity. Anaerobic respiration is less energy-efficient, but allows survival in habitats which lack oxygen.

What is produced during aerobic respiration?

Aerobic respiration Glucose is oxidised to release its energy, which is then stored in ATP molecules. Aerobic respiration breaks down glucose and combines the broken down products with oxygen, making water and carbon dioxide. The carbon dioxide is a waste product of aerobic respiration because cells do not need it.

Where is co2 released in aerobic respiration?

Thus three times carbon dioxide is released during the course of aerobic respiration- once during oxidative decarboxylation of pyruvate and two during the Krebs or citric acid cycle.

What is the efficiency of fermentation compared to aerobic respiration?

1 Answer. Aerobic respiration produces 34-36 ATP, depending on efficiency. Fermentation doesn’t produce any new ATP. However glycolysis, which precedes both aerobic respiration and fermentation, produces a net gain of 2ATP.

What do you understand by high efficiency of aerobic respiration?

Aerobic respiration is the process by which organisms use oxygen to turn fuel, such as fats and sugars, into chemical energy. In contrast, anaerobic respiration does not use oxygen. Aerobic respiration is much more efficient, and produces ATP much more quickly, than anaerobic respiration.

Where in the cell does aerobic respiration take place?

Which steps in cellular respiration require oxygen?

Glycolysis can take place without oxygen in a process called fermentation. The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation—require oxygen in order to occur.