Question

practice 2
answer the following questions about cellular respiration. darken the circle or circles that correspond to your answer choice(s).

1. the first stage of all energy - releasing pathways for organisms is —

a lactic acid fermentation.
b the krebs cycle.
c anaerobic respiration.
d glycolysis.
maap - eoc biology i
© 2020 jerald d. duncan
98
section cellular e

Explanation:

To solve this, we recall the stages of cellular respiration. Glycolysis is the first step in both aerobic and anaerobic energy - releasing pathways (like cellular respiration and fermentation). Lactic acid fermentation is a type of anaerobic respiration, not the first stage of all energy - releasing pathways. The Krebs cycle is the second stage of aerobic respiration. Anaerobic respiration is a broader process that includes glycolysis and subsequent steps (like fermentation), so it's not the first stage. So the first stage of all energy - releasing pathways for organisms is glycolysis.

Answer:

D. glycolysis