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(B) Dehydrogenation is a chemical reaction that involves the removal of hydrogen from an organic molecule.Since a hydrogen atom consists of one proton

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Dehydrogenation

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(B) Dehydrogenation is a chemical reaction that involves the removal of hydrogen from an organic molecule.Since a hydrogen atom consists of one proton and one electron,the removal of two hydrogen atoms $(2H)$ is equivalent to the loss of two protons $(2H^+)$ and two electrons $(2e^-)$.This process is a fundamental step in cellular respiration,particularly in the Krebs cycle and glycolysis,where enzymes called dehydrogenases facilitate the transfer of these electrons to coenzymes like $NAD^+$ and $FAD$.

$A$. Kreb's cycle	$i$. Inner surface of membrane of mitochondria
$B$. Photorespiration	$ii$. Cytoplasm
$C$. Oxidative phosphorylation	$iii$. Peroxisomes
$D$. Glycolysis	$iv$. Mitochondrial matrix

Which of the following processes involves the loss of two protons and two electrons?

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$A$. Kreb's cycle $i$. Inner surface of membrane of mitochondria
$B$. Photorespiration $ii$. Cytoplasm
$C$. Oxidative phosphorylation $iii$. Peroxisomes
$D$. Glycolysis $iv$. Mitochondrial matrix

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