metabolism 2 Flashcards
redox reactions include?
oxidation and reduction
what is oxidation?
loss of electrons by a substance
what is reduction?
gain of electrons by a substance
these reactions involve the transfer of electrons?
from one substance to another
these reactions are?
always coupled. when one substance is oxidized another becomes reduced
in many cellular oxidation..
electrons and protons are removed at the same time
- an electron travels with a proton
the removal of one proton and one electron is equivalent to a ?
hydrogen atom
this process of removal of one proton and one electron is called?
dehydrogenation reaction
many enzymes that catalyze redox reactions are called?
dehydrogenases
in general, biological oxidation-reduction reactions always involve?
2 electrons and 2 protons = thus 2 hydrogen atom transfers
the hydrogen atoms are not released into the solution but are transferred to another moelcule called ?
electron carrier
NAD, NADP, FAD in their oxidized state
what is NAD+
it acts as an oxidizing agent during cellular respiration
- the electrons from glucpse are transferred to nad+ = nadh
- nadh then stores the energy and the cell will make use of nadh to create atp
to get energy from glucose, organisms use two general processes called?
cellular respiration and fermentation
cellular respiration results in?
complete breakdown of glucose into carbon dioxide and water
fermentation results in?
production of various products
