Respiratory Quotient

Q. The respiratory Quotient (RQ) of glucose is

1. 0.5
2. 0.7
3. 1
4. 1.5

Q. Match the substrates to their respiratory quotients.

1. 0.7
2. 0.9
3. 1.33
4. 1

Q. Respiratory quotient of carbohydrates is

1. 1
2. less than 1
3. greater than 1
4. \N

Q. Select the common respiratory substrates.

1. Glucose and fructose
2. Trigylcerides and phospholipids
3. Keratin and melanin
4. DNA and RNA

Q.

R.Q is

1. ${\mathrm{O}}_2/{\mathrm{CO}}_2$

2. ${\mathrm{CO}}_2/{\mathrm{O}}_2$

3. ${\mathrm{CO}}_2+{\mathrm{O}}_2$

4. ${\mathrm{CO}}_2-{\mathrm{O}}_2$

Q. How does temperature affect the rate of respiration?

1. Increase in optimum temperature decreases the rate of respiration
2. Increase in optimum temperature increases the rate of respiration
3. Decrease in optimum temperature increases the rate of respiration
4. None of the above

Q. What do you understand by the term respiratory quotient?

1. Ratio of volume of $C{O}_2$ evolved to the volume of $O_2$ consumed in respiration
2. Ratio of volume of $O_2$ evolved to the volume of $C{O}_2$ consumed in respiration
3. Ratio of volume of $C{O}_2$ consumed to the volume of $O_2$ evolved in respiration
4. Ratio of volume of $O_2$ consumed to the volume of $C{O}_2$ evolved in respiration

Q.
$4\left(C_{51}{H}_{98}{O}_6\right)+290O_2\to 204{\mathrm{CO}}_2+196H_{2}O+\mathrm{Energy}$

The R.Q. of the above equation is

1. 1
2. 0.7
3. 1.45
4. 1.62

Q. Which of the following respiratory substrates requires the highest number of oxygen molecules for its complete oxidation?

1. Tripalmitin
2. Triolein
3. Tartaric acid
4. Oleic acid

Q.

Match the following columns:
$\begin{array}{cc}\underset{\left(\text{Respiratory substrate}\right)}{Column-I}& \underset{\left(\text{RQ value}\right)}{Column-II}\\ a)\text{Glucose}& 1)0.7\\ b)\text{Tripalmitin}& 2)0.9\\ c)\text{Protein}& 3)1.33\\ d)\text{Malic acid}& 4)1.0\end{array}$

1. a - 4, b -2, c - 1, d - 3
2. a- 4, b - 1, c - 2, d - 3
3. a - 1, b - 1, c - 3, d - 4
4. a - 4, b - 3, c - 2, d - 1

Q. When two tripalmitins are used in respiration, the R.Q is

1. 0.7
2. 0.14
3. 1
4. 0.9

Q. If $C{O}_2$ released is equal to the amount of $O_2$ absorbed the respiratory substrate is _____.

1. Organic acids
2. Fats
3. Proteins
4. Carbohydrates

Q.

Assertion (A): RQ value of fats and proteins is less than one

Reason (R): Fats and proteins consume more oxygen than carbohydrates do, during their oxidation

1. Both A $\&$ B are true and R explain A
2. Both A $\&$ B are true and R does not explain A
3. A is true and B is false
4. Both A $\&$ B are false

Q. R.Q. is less than 1 if the respiratory substrate is _______.

1. Organic acid
2. Sucrose
3. Glucose
4. Fats and proteins

Q. RQ for fermentation in yeast is

1. \N
2. 1
3. ∞
4. >1

Q. RQ of germinating Pisum sativum seed is ____.

1. Unity
2. More than unity
3. Less than unity
4. Zero