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Read about steps in cellular respiration 

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Read about steps in cellular respiration 

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Glycolysis occurs in the cytoplasm, and it allows one glucose molecule to split into two molecules of pyruvic acid. Next, the transition reaction moves the pyruvic acid into the mitochondria, where it is converted into acetyl coenzyme A. Next, the Krebs Cycle occurs in the mitochondria and produces four molecules of ammonium triphosphate and numerous molecules of reduced nicotinamide adenine dinucleotide. Finally, the electron transport chain in the mitochondria produces approximately 32 molecules of ATP and finishes the process of cellular respiration. In total, approximately 38 molecules of ATP are produced for every molecule of glucose.
Learn more about Cells

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What Are the Four Steps in Cellular Respiration?

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Glycolysis occurs in the cytoplasm, and it allows one glucose molecule to split into two molecules of pyruvic acid. Next, the transition reaction moves the pyruvic acid into the mitochondria, where it is converted into acetyl coenzyme A. Next, the Krebs Cycle occurs in the mitochondria and produces four molecules of ammonium triphosphate and numerous molecules of reduced nicotinamide adenine dinucleotide.

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Read about Cellular Respiration

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Read about Cellular Respiration

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Cellular Respiration is simply respiration(using oxygen) at a cellular level. When you learn the 3 steps of cellular respiration you will be able to connect why animals must breath oxygen and eat food to live. Sugar from food and oxygen are used in cellular respiration to create energy for the billions of cells in your body to live. Although there are other ways to make energy from the other nutrients in food, the focus of this article is to describe how cellular respiration uses sugar.

Cellular Respiration

A simplified approach to remembering cellular respiration is to break it down into 3 major steps and learn them separately. Each step further break down sugar and make molecules that are needed in the next step. Some simple rules you will need to accept right now are(this will make sense later):

Cellular respiration makes energy from sugar.

Cellular Respiration needs Oxygen to occur.

Cellular Respiration takes place in the mitochondria; the powerhouse of the cell.

Glycolysis

Glycolysis is the first step of cellular respiration and commonly begins with the simple sugar glucose. Through a series of steps a single molecule of glucose is broken down into 2 molecules of Pyruvic Acid to be used in Step 2 of Cellular Respiration.

The simplified steps of Glycolysis are show below but there is a more detailed description in my article about memorizing Glycolysis. The importance of glycolysis is the breakdown of a molecule of sugar. Not much energy is produced in this step.

[table caption="Steps of Glycolysis"] Stage,Molecules
Investment,Glucose
Investment,Glucose-6-Phosphate
Investment,Fructose-6-Phosphate
Splitting,Fructose-1 6-Bispohsphate
Splitting,G3P and DAP
Splitting,(2 molecules)G3P
Energy Generation,(2x) 13-Bisphosphoglycerate
Energy Generation,(2x) 3-Phosphoglyercerate
Energy Generation,(2x) 2-Phosphoglycerate
Energy Generation,(2x) Phosphoenolpyruvate
Energy Generation,(2x) Pyruvic Acid
[/table] [table caption="Products of Glycolysis"]

2 ATP

2 NADH

Pyruvic Acid(used in the next step of cellular respiration)

[/table]

Citric Acid Cycle

The second step of Cellular Respiration has many names; Citric Acid Cycle, Krebs Cycle, or TCA Cycle. Pyruvic Acid from Glycolysis is modified and brought inside of the Mitochondria where the rest of cellular respiration occurs. The Citric Acid Cycle is a repeating process that will make a majority of the molecules that are needed to make cellular energy. The Citric Acid Cycle makes the necessary precursors for the final step of cellular respiration.

If you remember that 2 molecules of Pyruvic Acid where made in Glycolysis, this should let you know that the Citric Acid Cycle does 2 cycles for every molecule of Glucose. ATP is energy while FADH2 and NADH are precursors that make multiple molecules of ATP in the final step of cellular respiration.

Here is a summary of the end products, but a more detailed article with more pictures and details can be found here: Memorize Krebs Cycle.

[table]

1 cycle, 2 CO2; 1 ATP; 1 FADH2; 3 NADH

2 cycles, 4 CO2; 2 ATP; 2 FADH2; 6 NADH

[/table]

Electron Transport Chain

The electron transport chain is the final step of cellular respiration that uses the oxygen that we inhale to produce energy in the form of ATP. The electron transport chain occurs on the membrane of the mitochondria, and uses the molecules made in Glycolysis and the Citric Acid Cycle to power the creation of ATP.

The NADH2 makes 3 ATP while FADH2 will produce 2 ATP. NADH2 makes more ATP because it enters the electron transport chain at an earlier stage and provides more momentum for ATP production. Think about this like a staircase in the image below. Whoever starts higher up will be moving faster and have more energy when it reaches the bottom.

As you can see from the image the NADH2 and FADH2 bring electrons with them. The electrons powers the hydrogen atoms to build up in one location. The hydrogen atoms then use there large numbers to create ATP. The oxygen we breath comes in to play by accepting the electrons after they have done their job. This is important because free electron floating around the body can cause harm to DNA and other molecules. For a detailed description of this see my article about the Electron Transport Chain.

The over goal of cellular respiration is to make energy in the form of ATP. Below I have an image that summarizes how much ATP is produced in each stage with 1 molecule of ATP.

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What Is Cellular Respiration (Simplified)

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Cellular Respiration is simply respiration(using oxygen) at a cellular level. When you learn the 3 steps of cellular respiration you will be able to connect why animals must breath oxygen and eat food to live. Sugar from food and oxygen are used in cellular respiration to create energy for the billions of cells in your body to live.

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Read about Cellular Respiration

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Process of Respiration

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The Process of Cellular Respiration | Gohomeworkhelp.com

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Also cellular respiration is the process of inhaling on a cellular level. Every living cells of animals proceed through this process. The cells get oxygen and glucose (a simple sugar) to make energy. Glucose and oxygen are delivered into the mitochondria of a cell (an organelle or small unit inside a cell).

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Respiration Overview

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Picture

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Picture of cell model of cellular respiration

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Comparing Photosynthesis and Respiration

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Flowchart

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Picture: Difference between processes

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Picture: Cellular Respiration and breathing

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Picture: Overview of Cell Respiration

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Tutorial on Cellular Respiration

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High School Song

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"Cell Respiration" - Cellular Respiration Song

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12/22/2015 Update: If you are seeing ads with this video, please note that I am not making any money off of it. BMG Rights Management, EMI Music Publishing, and others have claimed copyright on this video, even though it is a parody that only utilizes the melody from Black Eyed Pea's "I Gotta Feeling."

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Song about Cellular Respiration

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The Not So Lazy Song (Cellular Respiration)

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a song about the steps of cell Respiration Cover of "The Lazy Song" By Bruno Mars Edited by the one and only AUSTIN FEUERHAMMER!!!

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Rap about Cellular Respiration

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Purpose of Cellular Respiration

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Science Animated Video: Cellular Respiration

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Cellular Respiration for Dummies

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What Food is for

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ATP Production

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Basic Introduction to Cellular Respiration for my Biology 101 course. Details aerobic and anaerobic. All Pictures used from Microsoft Office clip art, Instructor Resources from purchased textbooks or Creative Commons Attribution with permission granted on the home website. All powerpoints are original and considered intellectual property. May be reused for educational purposes only.

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Energy in a Cell

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http://www.interactive-biology.com - In this lecture, I talk about Cellular respiration, which consists of Glycolysis, the Krebs Cycle and the Electron Transport Chain. I deal with how Glucose is broken down and how ATP is made. Since energy is important for all living things, it's important to understand how ATP, the energy currency of the body, works.

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Amoeba Sisters: Cellular Respiration

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(OLD VIDEO) Cellular Respiration and the Mighty Mitochondria

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Cellular Respiration: Glycolysis, Krebs cycle, Electron Transport [Animation]

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For More: http://www.diseasesanddrugs.com what is cellular respiration ? Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. stages of cellular respiration cell animation electron transport system cellular respiration for kids what is glycolysis ?

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Crash Course: ATP & Respiration

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ATP & Respiration: Crash Course Biology #7

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Due to Adobe's decision to stop supporting and updating Flash ® in 2020, browsers such as Chrome, Safari, Edge, Internet Explorer and Firefox will discontinue support for Flash-based content. As a result, this site has been retired.

If you have additional questions please contact Savvas Learning Company to find either your sales rep or the technical support form.

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Due to Adobe's decision to stop supporting and updating Flash ® in 2020, browsers such as Chrome, Safari, Edge, Internet Explorer and Firefox will discontinue support for Flash-based content. As a result, this site has been retired. If you have additional questions please contact Savvas Learning Company to find either your sales rep or the technical support form.

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Khan Academy Cellular Resspiration

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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Cellular respiration is the process of oxidizing food molecules, like glucose, to carbon dioxide and water.