What is the main idea of cellular respiration?

Asked By: Huan Michalovic | Last Updated: 25th April, 2020
Category: science biological sciences
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Cellular respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level. The purpose of cellular respiration is simple: it provides cells with the energy they need to function.

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Similarly one may ask, what is cellular respiration in simple terms?

Cellular respiration is what cells do to break up sugars to give energy they can use. This happens in all forms of life. Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobic respiration.

Additionally, what are the products of cellular respiration? Cellular respiration is this process in which oxygen and glucose are used to create ATP, carbon dioxide, and water. ATP, carbon dioxide, and water are all products of this process because they are what is created.

In this regard, what happens in cellular respiration?

Cellular respiration is the process of extracting energy in the form of ATP from the glucose in the food you eat. In stage one, glucose is broken down in the cytoplasm of the cell in a process called glycolysis. In stage two, the pyruvate molecules are transported into the mitochondria.

What are the 3 main parts of cellular respiration?

Aerobic cell respiration is divided by us into three parts in order to more easily see what is happening--Glycolysis, Krebs Cycle, and electron Transport System (ETS). We will explore these one at a time. GLYCOLYSIS: The breakdown of a glucose molecule (a six carbon chain) into two three-carbon pieces called pyruvate.

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What is ATP used for?

The Adenosine triphosphate (ATP) molecule is the nucleotide known in biochemistry as the "molecular currency" of intracellular energy transfer; that is, ATP is able to store and transport chemical energy within cells. ATP also plays an important role in the synthesis of nucleic acids.

Where do the steps of cellular respiration occur?

Cellular respiration occurs in both eukaryotic and prokaryotic cells, with most reactions taking place in the cytoplasm of prokaryotes and in the mitochondria of eukaryotes. There are three main stages of cellular respiration: glycolysis, the citric acid cycle, and electron transport/oxidative phosphorylation.

What is the definition of cellular respiration in biology?

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. Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity.

What is the advantage of cellular respiration?

List of Pros of Cellular Respiration. This is the most efficient way of harvesting energy that has been stored in food. This is a catabolic way in the production of adenosine triphosphate (ATP). The presence of ATP, which is a molecule with high energy, allows the production of working cells.

What is respiration short answer?


Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells). Note the number of oxygen, carbon dioxide, and water molecules involved in each 'turn' of the process.

What is fermentation and why is it important?

Fermentation is important in anaerobic conditions when there is no oxidative phosphorylation to maintain the production of ATP (adenosine triphosphate) by glycolysis. During fermentation, pyruvate is metabolised to various compounds such as lactic acid, ethanol and carbon dioxide or other acids.

Why do we need oxygen in cellular respiration?

Cellular respiration is the process cells use to make energy. Cells in our body combine glucose and oxygen to make ATP and carbon dioxide. Oxygen combines with the electrons and two hydrogen ions to make water. Lastly, the hydrogen ions flow through ATP synthase to make ATP.

How do we get ATP?

Although cells continuously break down ATP to obtain energy, ATP also is constantly being synthesized from ADP and phosphate through the processes of cellular respiration. Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP.

What is meant by ATP?


Adenosine triphosphate, also known as ATP, is a molecule that carries energy within cells. It is the main energy currency of the cell, and it is an end product of the processes of photophosphorylation (adding a phosphate group to a molecule using energy from light), cellular respiration, and fermentation.

What is the relationship between photosynthesis and cellular respiration?

Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water.

What are the products of glycolysis?

Glycolysis involves the breaking down of a sugar (generally glucose, although fructose and other sugars may be used) into more manageable compounds in order to produce energy. The net end products of glycolysis are two Pyruvate, two NADH, and two ATP (A special note on the "two" ATP later).

Where is water used in cellular respiration?

Water is formed when hydrogen and oxygen react to form H2O during the electron transport chain, which is the final stage of cellular respiration.

What are the steps involved in cellular respiration?

The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

Steps of cellular respiration
  • Glycolysis. Six-carbon glucose is converted into two pyruvates (three carbons each).
  • Pyruvate oxidation.
  • Citric acid cycle.
  • Oxidative phosphorylation.

What are the final waste products of cellular respiration?


All Eukaryotic organisms carry out cellular respiration: all animals, plants, protists, and fungi. The end product of cellular respiration is ATP. The waste products are carbon dioxide and water.