Question

part 2 - extended multiple choice (scenarios & definitions)

1. during the breakdown of glucose, the cell first splits sugar molecules into smaller parts in the cytoplasm without oxygen. this stage releases only a small amount of energy but is essential to begin respiration.

which process is being described?
a) krebs cycle
b) glycolysis
c) aerobic respiration
d) electron transport chain

Explanation:

Glycolysis occurs in the cytoplasm without oxygen, splitting glucose into smaller parts and releasing a small amount of energy to initiate respiration. The Krebs cycle occurs in the mitochondria and requires oxygen. Aerobic respiration is the overall process that includes glycolysis, the Krebs cycle, and the electron - transport chain. The electron - transport chain is the final stage of aerobic respiration that occurs in the mitochondria and produces a large amount of energy.

Answer:

b) Glycolysis