I believe the answer is PREZYGOTIC isolating mechanisms
Answer:
In cellular respiration, glucose <u>Loses</u> electrons, whereas <u>Oxygen gains</u> electrons.
Explanation:
In cellular respiration, glucose is oxidized when it loses electrons in hydrogen atoms. Oxygen is reduced as it gains electrons attached to hydrogen atoms.
Ok this might not be the best answer but just by reading it, it may be unreliable because numbers do change over time