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What happens to pyruvate if electron acceptor is absent and What happens if electron acceptor is present?
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Is oxygen present in aerobic respiration?
Yes. Oxygen is the last electron acceptor in the electron transport chain.
Does ATP syntaste produce ATP during cellular respiration?
Yes. ATP synthase does increase the production of ATP aerobic cellular respiration. That means oxygen has to be present to be the last or final electron acceptor.
What has to be present for Pyruvate to enter the mitochondria?
The mitochondrial membrane has special transporter proteins which are needed to transport pyruvate. This transport also requires ATP.
What happens to pyruvate produced when very little oxygen is available?
Pyruvate is the result of glycolysis, the degradation of a molecule of glucose. In aerobic conditions (with O2 present), pyruvate is oxidized to H2O and CO2 via the citric acid cycle and oxidative phosphorylation to produce energy (ATP). In anaerobic conditions (low levels of O2), pyruvate metabolism goes in two directions: in yeasts, an alcoholic fermentation takes place (with the production of two CO2 molecules + two molecules of ethanol); while in muscle, homolactic fermentation occurs (with the result of 2 molecules of lactate).
Can cellular respiration and fermentation be used to release energy?
No. Either cellular repsiration or fermentation can be used to release energy depending on the presence or absense of oxygen. When oxygen is present, it acts as the terminal electron acceptor in cellular repritation, followed by the release of energy When there is no oxygen present, other organic molecules (like lactic acid) accept the terninal electron and energy is generated
Is oxygen present in aerobic respiration?
Yes. Oxygen is the last electron acceptor in the electron transport chain.
Why oxygen is needed for krab cycle?
Oxygen is the final electron acceptor in the electron transfer chain and therefore needs to be present in the Kreb's cycle. Without oxygen only anaerobic repiration will occur.
What gas must be present for the aerobic breakdown of glucose to occur?
Oxygen, the final electron acceptor in aerobic respiration.
What 2 processes are involved in anaerobic respiration?
Anaerobic Respiration can occur in plant and animal cells, in the absence of oxygen.Animal CellsC6H12O6 (glucose) ---> 2 lactic acid + 2ATPPlant CellsC6H12O6 ---> ethanol + carbon dioxide + 2ATPThe two processes that occur are:1 - Glycolysis (occurs in the cytosol of cells): The glucose molecule is split into two pyruvate (3- carbon molecules). As a result, energy is released and forms 2 ATP molecules released as well as 2 loaded acceptor molecule called NADH.-(Since anaerobic respiration occurs in the absence of oxygen, it can no longer continue its journey to the Krebs Cycle and the Electron Transport Chain.)2 - Fermentation: The hydrogens from the 2 NADH molecules. In animals, The NADs will then reattach these hydrogens onto the middle carbon atom in the pyruvate (3- carbon) molecule. This produces 2 lactic acid molecules, for each pyruvate molecule. In comparison, in plants, ethanol and carbon dioxide is produced.
What is pyruvate converted into when oxygen is not present?
lactate
What is a Lewis base acid?
Lewis acid is an electron acceptor / Lewis base is an electron donor. It is helpful to use this definition of acid and base in (1) organic chemistry (2) also when there are no Hydrogens present in the molecule. BF3 is a Lewis acid it seeks out and can accept electrons.
Does ATP syntaste produce ATP during cellular respiration?
Yes. ATP synthase does increase the production of ATP aerobic cellular respiration. That means oxygen has to be present to be the last or final electron acceptor.
What happens when oxygen is present and includes glycolysis and Krebs cylcle and Electron transport?
Cellular Respiration.
What has to be present for Pyruvate to enter the mitochondria?
The mitochondrial membrane has special transporter proteins which are needed to transport pyruvate. This transport also requires ATP.
What will happen to pyruvate if there is no oxide present?
their other organisms will die if no oxide
What are the stages of Cellular respiration.?
The Stages of Cellular Respiration 1. Glucose is converted to pyruvate producing a small amount of ATP and NADH. 2. When oxygen is present, pyruvate and NADH are used to make a large amount of ATP. When oxygen isn't present, pyruvate is converted to either lactate or ethanol and carbon dioxide. In Stage One, the breakdown of glucose happens, with glycolysis. In Stage Two, ATP is produced. Stage one is called the Calvin cycle, and stage two is called the Krebs cycle. For more information, go to http://Biology.about.com/od/cellularprocesses/a/cellrespiration.htm
What two parts of cellular respiration require oxygen?
-Oxidative phosphorylation: oxygen is the final electron acceptor in the electron transport chain, it also breaks apart and combines with 4 hydrogen atoms to form 2 water molecules. -The Citric Acid Cycle occurs only when oxygen is present but it doesn't use oxygen directly.
