Question

Consider the following statements with respect to respiration.

(i) Glycolysis occurs in the cytoplasm of the cell. 

(ii) Aerobic respiration takes place within the mitochondria. 

(iii) Electron transport system is present in the outer mitochondrial membrane. 

(iv) \(C_{51}H_{98}O_6\) is the chemical formula of tripalmitin, a fatty acid. 

(v) Respiratory quotient= \(\frac{volume \,of o_2\, evolved}{volume \,of\, o_2 \,consumed}\) Of the above statements

• A. (i), (ii) and (iv) are correct
• B. (ii), (iii) and (iv) are correct
• C. (iii), (iv) and (v) are correct
• D. (ii), (iv) and (v) are correct

Answer 1

The Correct Option is A

Let's go through each statement and determine whether it is correct or not:

(i) Glycolysis occurs in the cytoplasm of the cell - This statement is correct. Glycolysis is the initial step of cellular respiration, and it takes place in the cytoplasm of the cell.

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(ii) Aerobic respiration takes place within the mitochondria - This statement is correct. While glycolysis occurs in the cytoplasm, the subsequent stages of aerobic respiration, including the citric acid cycle (Krebs cycle) and the electron transport chain, take place within the mitochondria of the cell.

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(iii) Electron transport system is present in the outer mitochondrial membrane - This statement is not correct. The electron transport chain (ETC) is located in the inner mitochondrial membrane, not the outer mitochondrial membrane. The inner mitochondrial membrane is where the ETC complexes are embedded and where the actual electron transport and ATP synthesis occur.

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(iv) C₅₁H₉₈​0₆​ is the chemical formula of tripalmitin, a fatty acid - This statement is not correct.  C₅₁H₉₈​0₆​​ is not the chemical formula of a fatty acid. It appears to be the chemical formula of a triglyceride, specifically tripalmitin, which is composed of three palmitic acid molecules esterified to a glycerol molecule.

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(v) Respiratory quotient =Volume of O₂​ consumed Volume of CO₂​ evolved​ - This statement is not correct. The respiratory quotient (RQ) is actually calculated by dividing the volume of carbon dioxide produced (VCO₂) by the volume of oxygen consumed (VO₂), not the other way around.

so,the correct option is(A): (i), (ii) and (iv) are correct.