AP BIOLOGY

LABORATORY REVIEW

CELL RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What comes next after glycolysis if oxygen is present
A
Krebs cycle
B
Electron transport chain
C
Alcoholic Fermentation
D
Lactic Acid Fermentation
Explanation: 

Detailed explanation-1: -In the presence of oxygen, the next stage after glycolysis is oxidative phosphorylation, which feeds pyruvate to the Krebs Cycle and feeds the hydrogen released from glycolysis to the electron transport chain to produce more ATP (up to 38 molecules of ATP are produced in this process).

Detailed explanation-2: -The energy released by this breakdown is carried by NADH. The Krebs cycle completes the breakdown of glucose begun in glycolysis. If oxygen is present, pyruvate enters the mitochondria and is converted to AcetylCoA.

Detailed explanation-3: -The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

Detailed explanation-4: -If oxygen is available, glycolysis is followed by two processes in the mitochondria–the Krebs cycle and oxidative phosphorylation, respectively–that further increase ATP yield.

Detailed explanation-5: -Cellular respiration happens when oxygen is present and includes glycolysis, Krebs cycle, and Electron transport.

There is 1 question to complete.