Arrange the RQ value of following respiratory substrates in ascending order (a) `C_(4)H_(6)O_(5) " " (b) C_(6)H_(12)O_(6)`
(c ) `C_(18)H_(36)O_(2) " " ` (d) Succulents (night)

Options

A. (c ), (b), (d) & (a)
B. (d), (c ), (b) & (a)
C. (b), (c ), (a) & (d)
D. (c ), (b), (a) & (d)

Answer

To arrange the RQ (Respiratory Quotient) values of the given respiratory substrates in ascending order, we first need to identify the RQ values for each substrate:

1. **C4H6O5 (Malic Acid)**: The RQ value is **1.33**.
2. **C6H12O6 (Glucose)**: The RQ value is **1**.
3. **C18H36O2 (Stearic Acid)**: The RQ value is **0.7**.
4. **Succulents (at night)**: The RQ value is **0**.

Now, we can list these RQ values in order from the lowest to the highest:

- Succulents (0)
- Stearic Acid (0.7)
- Glucose (1)
- Malic Acid (1.33)

Thus, the order of the respiratory substrates in ascending order of their RQ values is:

1. **Succulents (D)**
2. **Stearic Acid (C)**
3. **Glucose (B)**
4. **Malic Acid (A)**

**Final Answer**: D, C, B, A