Question

what is the primary purpose of cellular respiration?
a. to produce glucose from pyruvate
b. to synthesize proteins
c. to convert energy from nutrients into atp
d. to break down dna
which molecules deliver electrons to the electron transport chain?
a. carbon dioxide and water
b. atp and adp
c. nadh and fadh2
d. glucose and pyruvate
which process follows glycolysis in the absence of oxygen?
a. fermentation
b. photosynthesis
c. electron transport chain
d. citric acid cycle

Explanation:

1. Cellular respiration is a metabolic process that converts the energy stored in nutrients into ATP, the energy - currency of the cell.
2. NADH and FADH2 are electron - carriers that donate electrons to the Electron Transport Chain during cellular respiration.
3. In the absence of oxygen, after glycolysis, fermentation occurs to regenerate NAD+ so that glycolysis can continue.

Answer:

1. c. To convert energy from nutrients into ATP
2. c. NADH and FADH2
3. a. Fermentation