NEET  >  Respiratory Quotient

# Respiratory Quotient Video Lecture - Biology Class 11 - NEET

## Biology Class 11

268 videos|544 docs|326 tests

## FAQs on Respiratory Quotient Video Lecture - Biology Class 11 - NEET

 1. What is respiratory quotient and how is it calculated?
Ans. The respiratory quotient (RQ) is a ratio that indicates the ratio of carbon dioxide (CO2) produced to oxygen (O2) consumed during respiration. It is calculated by dividing the volume of CO2 produced by the volume of O2 consumed. The formula for calculating RQ is RQ = VCO2/VO2.
 2. How is respiratory quotient used to determine the type of fuel being utilized by the body?
Ans. The respiratory quotient can be used to determine the type of fuel being utilized by the body during respiration. Different macronutrients, such as carbohydrates, fats, and proteins, have different RQ values. For example, the RQ for carbohydrates is 1.0, for fats it is 0.7, and for proteins it varies. By measuring the RQ, we can determine which fuel source the body is primarily using.
 3. What does a respiratory quotient value of 1.0 indicate?
Ans. A respiratory quotient value of 1.0 indicates that the body is primarily utilizing carbohydrates as a fuel source. This means that for every molecule of oxygen consumed, one molecule of carbon dioxide is produced. It suggests that the individual is in a state of carbohydrate metabolism.
 4. How does respiratory quotient vary during different types of physical activities?
Ans. The respiratory quotient can vary during different types of physical activities. During low-intensity activities, such as walking or light jogging, the body primarily utilizes fats as a fuel source, resulting in a lower RQ value. On the other hand, during high-intensity activities, such as sprinting or intense weightlifting, the body relies more on carbohydrates, leading to a higher RQ value.
 5. Can respiratory quotient be used to assess metabolic rate?
Ans. Yes, respiratory quotient can be used to assess metabolic rate. The RQ value provides information about the type of fuel being utilized by the body, which can be used to estimate the metabolic rate. Since different macronutrients require different amounts of oxygen and produce different amounts of carbon dioxide, the RQ value can give insights into the metabolic rate and energy expenditure of an individual.

## Biology Class 11

268 videos|544 docs|326 tests

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