Question

In glycolysis, as in all the stages of cellular respiration, the transfer of electrons from electron donors to electron acceptors plays a critical role in the overall conversion of the energy in foods to energy in ATP. These reactions involving electron transfers are known as oxidation-reduction, or redox, reactions.
Fill the words from brackets to the appropriate blanks to complete the sentences.
(NADH, NAD+, pyruvate, water, glucose, oxygen, reduced, oxidized)
1. When a compound donates (loses) electrons, that compound becomes __________. Such a compound is often referred to as an electron donor.
2. When a compound accepts (gains) electrons, that compound becomes ___________ . Such a compound is often referred to as an electron acceptor.
3. In glycolysis, the carbon-containing compound that functions as the electron donor is _______
4. Once the electron donor in glycolysis gives up its electrons, it is oxidized to a compound called ________.
5. ____________ is the compound that functions as the electron acceptor in glycolysis. 6. The reduced form of the electron acceptor in glycolysis is.

Answer 1

1. Oxidized
2. Reduced
3. Glucose
4. Pyruvate
5. NAD+
6. NADH

An acronym for understanding gain and loss of electrons is OIL RIG (Oxidation is Loss of electrons, Reduction is Gain of electrons).