Question

1. what is the equation for cellular respiration?
2. list 3 organisms that generate energy through cellular respiration.

1. how many atp molecules are produced during glycolysis?
2. how many atp molecules are produced during the krebs cycle?
3. how many atp molecules are produced in the electron transport chain?

Explanation:

1. Cellular respiration is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy (ATP). The chemical equation is \(C_6H_{12}O_6 + 6O_2

ightarrow6CO_2 + 6H_2O+\text{Energy (ATP)}\).

1. Most living organisms perform cellular respiration. Humans (as mammals), oak trees (as plants), and E. coli (as bacteria) are examples.
2. During glycolysis, 2 ATP molecules are produced (net gain, after subtracting the initial ATP investment).
3. In the Krebs cycle (per glucose molecule, considering two turns as glucose is split into two pyruvates), 2 ATP molecules are produced.
4. The electron transport chain is the major ATP - producing stage. Approximately 32 - 34 ATP molecules are produced (depending on the shuttle mechanism for NADH in the cytoplasm).

Answer:

1. \(C_6H_{12}O_6 + 6O_2

ightarrow6CO_2 + 6H_2O+\text{Energy (ATP)}\)

1. Humans, oak trees, E. coli
2. 2
3. 2
4. 32 - 34