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Respiration In Plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYRespiration In Plants3 Marks
Question
Neha while learning for her test, got confused how aerobic pyruvic acid is transported to mitochondria for further oxidation. She asked her elder sister (who is a graduate in biology) about this and also asked her to explain the same process in detail. Her sister explained her that it gets completely oxidised into CO2 and water along with the formation of ATP.
  1. Mention the sites in the mitochondria, where these events occur.
  2. What happens to pyruvic acid before it enters 'Krebs' cycle?
  3. Write the summary equation for the 'Krebs' cycle.
  4. Mention the value implicit through Neha's character.
✓

Answer

  1. Mitochondrial matrix, and electron transport particles.

  2. It is converted into acetyl Co-A

  3. $\text{Pyruvic acid}+4\text{NAD}+\text{FAD}^++2\text{H}_2\text{O}+\text{ADP}+\text{Pi}$

$\xrightarrow[\text{matrix}]{\text{Mitochondrial}}3\text{CO}_2+4\text{NADH}+4\text{H}^++\text{FADP}+\text{ATP}$

  1. Neha is attentive, inquisitive and listens patiently to the explanation provided.

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