youngjuvie
  • youngjuvie
PLEASE HELP!!!!!! What process occurs in the first stage of cellular respiration? Electron transport begins. Glucose is broken down. Oxygen is taken in. The Krebs cycle is completed
Biology
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SOLVED
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schrodinger
  • schrodinger
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Somy
  • Somy
so have you tried googling yet?
youngjuvie
  • youngjuvie
yeah i just keep getting atp
youngjuvie
  • youngjuvie
i have a feeling its mihgt be the krebs cycle

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Somy
  • Somy
okay, tell me what is kreb cycle? what happens there?
youngjuvie
  • youngjuvie
aint it a part of cellular respriation
youngjuvie
  • youngjuvie
something like that
Somy
  • Somy
that doesn't tell me much tho details, go for details. What happens in Krebs cycle?
youngjuvie
  • youngjuvie
alright first let me finish the last bight of my asigntment
Somy
  • Somy
ok, as u wish
youngjuvie
  • youngjuvie
alright
youngjuvie
  • youngjuvie
the krebs is the sequence of reactions in which most living cells generate energy during respiration and adp being converted to atp
youngjuvie
  • youngjuvie
imma chose break down of glycose
anonymous
  • anonymous
Respiration is the process by which cells obtain energy from glucose. During respiration, cells break down simple food molecules, such as sugar, and release the energy they contain. Respiration is carried out continuously by plant cells, as well as animal cells. This process begins in the cytoplasm, where molecules of glucose are broken down into smaller molecules. Oxygen is not involved, and only a small amount of energy is released. Next, the process moves on to the mitochondria, where the small molecules are broken down into even smaller molecules. These chemical reactions require oxygen, and they release a great deal of energy. This energy is still stored in the form of chemical energy, but now it is stored in molecules that are readily used by the cell. The three final products are carbon dioxide, water, and energy. _______________________________________________________________________________________________ Cellular respiration is a cellular process that requires oxygen and gives off carbon dioxide in order to obtain energy for the organism. That's a brief meaning so see the Related Link below for more info. In brief, there are 3 stages: Glycolysis, the Kreb's Cycle, and Oxidative Phosphorylation (or Electron Transport Chain). Cellular respiration takes place near or in the mitochrondria, an organelle in all eukaryotic cells. In Glycolysis, a sugar is taken in and, through a bit of energy stored in Adenosine Triphosphate (ATP), it gives off some electrons which are stored, and it splits into Pyruvic acid. In the Kreb's Cycle, the Pyruvic acid gives off more electrons and cycles through, some of it becoming carbon dioxide. In Oxidative Phosphorylation (Electron Transport Chain), the stored electrons "pump" hydrogen cations (positive ion) to one side of the inner mitochondria membrane. Due to the high concentration, the hydrogen cations flow back through a protein that makes a lot of ATP. For every sugar molecule, it makes about 60 of these. The oxygen is taken in here to take care of the hydrogen ions- it becomes water. it converts energy in food into a more usable form! sources:http://www.answers.com/Q/What_is_cellular_respiration
Somy
  • Somy
indeed but again, this is just description Kreb cycle to be short is basically a set of reactions that utilizes the pyruvate compounds and during this utilization process we generate electrons that are taken up by Electron transporters and then this transporter goes into next stage of respiration which is Electron Transport chain - here the electrons + Hydrogen ions play role in generating ATP as a final product
Somy
  • Somy
Now before you get Pyruvate, you need glucose, and 1 glucose is broken down to 2 pyruvates this process is called Glycolysis
Somy
  • Somy
Oxygen that we take in is needed in the last step of these sets of reactions, when you need to make ATP, so are in involved in electron transport chain.
youngjuvie
  • youngjuvie
i got that question right
Somy
  • Somy
yeah, coz u guessed it right there

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