Question

cellular respiration and redox reactions
complete the sentences with the appropriate words.

1. cellular respiration is the (click to select) of organic compounds to extract energy.
2. an atom that loses electrons is (click to select) and an atom accepting electrons is (click to select).
3. nad+ accepts a pair of (click to select) from the substrate along with a (click to select) to form nadh.
4. cells use enzyme - facilitated (click to select) reactions to take energy from food sources and convert it to atp.
5. energy is (click to select) during each transfer of electrons in cellular respiration.

Explanation:

1. Cellular respiration is the controlled breakdown of organic compounds to release energy.
2. Oxidation is the loss of electrons by an atom, and reduction is the gain of electrons by an atom.
3. NAD+ accepts a pair of electrons and a proton from the substrate to form NADH.
4. Cells use enzyme - facilitated redox reactions to convert energy from food sources into ATP.
5. Energy is released during each electron transfer in cellular respiration.

Answer:

1. controlled breakdown
2. oxidized; reduced
3. electrons; proton
4. redox
5. released