MCQ
The respiratory quotient during cellular respiration would depend on:
- AThe nature of enzymes involved
- BThe nature of the substrate
- CThe amount of carbon dioxide released
- DThe amount of oxygen utilised
Explanation:
The respiratory quotient is the ratio, which defines the amount of CO2eliminated to that of O2consumed.
Thus it is evident that it solely depends on the nature of the substrate.
For example, hexose sugar will have a value of RQ = 1, and fats have an RQ less than one.
During the oxidation of carbohydrates, the amount of oxygen used is equal to the amount of carbon dioxide produced.
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| Description | Structures |
| $(a)$ Tibia and fibula | Both form parts of knee joint |
| $(b)$ Cartilage and cornea | No blood supply but do require oxygen for respiratory need |
| $(c)$ Shoulder joint and elbow joint | Ball and socket type of joint |
| $(d)$ Premolars and molars | $ 20$ in all and $3$ rooted |