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2007-01-25 13:48:47 · 7 answers · asked by nawacissej 1 in Science & Mathematics Biology

7 answers

Cellular respiration is a process that describes the metabolic reactions and processes that take place in a cell to obtain chemical energy from fuel molecules. Energy is released by the oxidation of fuel molecules and is stored as "high-energy" carriers. The reactions involved in respiration are catabolic reactions in metabolism.

Fuel molecules commonly used by cells in respiration include glucose, amino acids and fatty acids, and a common oxidizing agent (electron acceptor) is molecular oxygen (O2). There are organisms, however, that can respire using other organic molecules as electron acceptors instead of oxygen. Organisms that use oxygen as a final electron acceptor in respiration are described as aerobic, while those that do not are referred to as anaerobic.

The energy released in respiration is used to synthesise molecules that act as a chemical storage of this energy. One of the most widely used compounds in a cell is adenosine triphosphate (ATP) and its stored chemical energy can be used for many processes requiring energy, including biosynthesis, locomotion or transportation of molecules across cell membranes. Because of its ubiquitous nature, ATP is also known as the "universal energy currency", since the amount of it in a cell indicates how much energy is available for energy-consuming processes.

2007-01-25 13:59:12 · answer #1 · answered by pawan l 2 · 0 1

If you want the scaled down answer, here it is. The respiration process that takes place inside cells has to do with the combination of oxygen and the food you eat to create energy.

The first stage of this two part process takes place in the cytoplasm of the organism's cells. There molecules of glucose (simple sugars) are broken down into smaller molecules. Oxygen is not involved, and only a small amount of energy is released.

The second stage of respiration takes place in the mitochondria (the powerhouse of the cell). There the small molecules are broken down into even smaller molecules. These chemicals require oxygen, and they relaease a great deal of energy.

2007-01-25 14:09:16 · answer #2 · answered by michelle 5 · 0 1

Here it is wrapped up in one simple sentence. Cellular respirations is the dynamic ability to produce ATP (adinosine triphosphate) Now, all you have to do is lool up ATP and go on from there

2007-01-25 14:16:41 · answer #3 · answered by Memere RN/BA 7 · 0 1

photosynthesis:: it extremely is the place vegetation replace CO2 AND H20 INTO SUGARS. they alter gentle power FROM THE sunlight INTO nutrition AND OXYGEN (PHOTOSYNTHESIS). IT happens interior the CHLOROPLAST cellular respiration:: it extremely is the place vegetation AND ANIMALS replace nutrition INTO power TO DO artwork. THE SUGAR GLUCOSE is broken right down to THE power MOLECULE ATP AND CO2 . IT happens interior the MITOCHONDRIA

2016-12-16 13:46:47 · answer #4 · answered by Anonymous · 0 0

the cell takes o2 and brings it into the crebs? cycle and changes it into ATP, the molecule which is used as the energy in the body

2007-01-25 14:26:52 · answer #5 · answered by dr s 3 · 0 1

Go here: http://www.sirinet.net/~jgjohnso/respiration.html

2007-01-25 14:13:28 · answer #6 · answered by musiclover2008 3 · 0 0

open your science book and read about it, or at least google it.

2007-01-25 13:57:02 · answer #7 · answered by Anonymous · 0 2

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