Question

question 1 of 10
which step in cellular respiration happens first?
a. electron transport chain
b. glycolysis
c. krebs cycle
d. pyruvate processing

Explanation:

Step1: Recall cellular respiration steps

Cellular respiration has glycolysis, pyruvate processing, Krebs cycle, electron transport chain.

Step2: Determine first step

Glycolysis occurs first in the cytoplasm, breaking glucose.

Answer:

B. Glycolysis