Question

the krebs cycle is the ______ stage of cellular respiration.
a first
b second
c third

Explanation:

Cellular respiration has three main stages: glycolysis, the Krebs cycle (also known as the citric - acid cycle), and oxidative phosphorylation. Glycolysis is the first stage, followed by the Krebs cycle, which takes place in the mitochondrial matrix and processes the products of glycolysis.

Answer:

b. second