Breaking Down Cellular Respiration: The Three Stages

🔍Cellular respiration is the process by which cells convert glucose into usable energy.

⚡️Glycolysis is the first stage of cellular respiration, where glucose is converted into pyruvate.

🔄Glycolysis can occur in the presence or absence of oxygen.

🔬The citric acid cycle is the second stage of cellular respiration, where pyruvate is further broken down to produce ATP.

🔋Oxidative phosphorylation is the final stage of cellular respiration, where ATP is synthesized using energy from electron transport chain.

What is cellular respiration?

—Cellular respiration is the process by which cells convert glucose into usable energy.

What is glycolysis?

—Glycolysis is the first stage of cellular respiration, where glucose is converted into pyruvate.

Can glycolysis occur without oxygen?

—Yes, glycolysis can occur under both aerobic and anaerobic conditions.

What is the citric acid cycle?

—The citric acid cycle is the second stage of cellular respiration, where pyruvate is further broken down to produce ATP.

What is oxidative phosphorylation?

—Oxidative phosphorylation is the final stage of cellular respiration, where ATP is synthesized using energy from the electron transport chain.

00:05Cellular respiration can be broken down into three main stages: glycolysis, the citric acid cycle, and oxidative phosphorylation.

00:08Glycolysis is the first pathway used by cells to break down glucose for energy. It occurs in the cytoplasm and can happen in the presence or absence of oxygen.

00:10During glycolysis, glucose is split into two molecules of pyruvate, producing ATP and NADH.

00:16The citric acid cycle is the second stage of cellular respiration. It takes place in the mitochondria and further breaks down pyruvate to produce ATP, NADH, and FADH2.

00:20Oxidative phosphorylation is the final stage of cellular respiration. It occurs in the inner mitochondrial membrane and involves the synthesis of ATP using energy from the electron transport chain.