Pathways of respiration

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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1. A.
   Vacuole and Cytoplasm
2. B.
   Chloroplast and Mitochondria
3. C.
   Mitochondria and Cytoplasm
4. D.
   Cytoplasm and Mitochondria

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1. A.
   Mitochondria and Oxygen deficient muscle cells
2. B.
   Cytoplasm and Oxygen rich muscle cells
3. C.
   Cytoplasm and Yeast cells
4. D.
   Cytoplasm and Oxygen deficient muscle cells

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1. A.
   Glucose $\rightarrow$ Pyruvate $\xrightarrow[\text{of } \mathrm{O_2}]{\text{Absence}}$ Ethanol + $\mathrm{CO_2}$ + Energy
2. B.
   Glucose $\xrightarrow{\mathrm{O_2}}$ Pyruvate $\xrightarrow{\mathrm{O_2}}$ Energy
3. C.
   Glucose $\xrightarrow{\mathrm{O_2}}$ Pyruvate $\xrightarrow[\text{oxygen}]{\text{Lack of}}$ Ethanol + Energy
4. D.
   Glucose $\rightarrow$ Pyruvate $\xrightarrow[\text{oxygen}]{\text{Lack of}}$ Lactic acid + Energy

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1. A.
   (i) and (ii)
2. B.
   (i) and (iii)
3. C.
   (ii) and (iii)
4. D.
   (i) only

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