Tag: respiration and energy transfer

Questions Related to respiration and energy transfer

The respiratory quotient during cellular respiration would depend upon

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. Amount of $CO _{2}$ released

  2. Amount of $O _{2}$ utilized

  3. The nature of enzyme in invoked

  4. Nature of substrate

  5. Both (a) and (b)

Show answer
Correct Option: D
Explanation:

The respiratory quotient (R.Q) is the ration of the volume of the CO$ _{2}$ released to the volume of the O$ _{2}$ utilized by a substrate during the process of respiration. It solely depends on the nature of the substrate. The R.Q. reflect the nature of the substrate, for example, R.Q. 1 indicated that glucose is the respiratory substrate.

Hence, the correct answer is 'Nature of substrate'.

Respiratory quotient (R. Q.) is defined as the

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. Vol. of $O _{2}$ / vol. of $CO _{2}$

  2. Vol. of $CO _{2}$ / vol. of $O _{2}$

  3. Vol. of $O _{2}$ / vol. of $N _{2}$

  4. Vol. of $N _{2}$ / vol. of $CO _{2}$

Show answer
Correct Option: B
Explanation:

The volume of carbon dioxide released and oxygen consumed in the process of respiration is called as respiratory quotient or R.Q of that substrate.

R.Q. stands for

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. Resistance coefficient

  2. Replicase concentration

  3. Respiratory quotient

  4. Reticular concentration

Show answer
Correct Option: C
Explanation:

Respiratory quotient (RQ) is the ratio of the volume of carbon dioxide released to the volume of oxygen taken in respiration in the given period of time at standard temperature and pressure. 

RQ = CO2 eliminated / O2 consumed

Name of the substance Respiratory Quotient
Carbohydrates 1
Proteins 0.8 - 0.9
Triolein 0.7
Tripalmitin (Fat) 0.7
Malic acid 1.33
Tartaric acid 1.6
Oxalic acid 4.0

Thus, the correct answer is option C. 


Respiratory quotient is expressed as which of the following equations?

biology respiration and energy transfer respiratory quotient-basic respiration-plants respiratory quotient

  1. $O _2/CO _2$

  2. $CO _2/O _2$

  3. $O _2/H _2O$

  4. $CO _2 - O _2$

Show answer
Correct Option: B
Explanation:

During aerobic respiration, $O _2$ is consumed and $CO _2$ is released. The ratio of the volume of $CO _2$ evolved to the volume of $O _2$ consumed in respiration is called the respiratory quotient (R.Q) or respiratory ratio.  Thus the following expression is used to calculate the value of R.Q.
RQ= volume of $CO _2$ evolved/ volume of $O _2$ consumed.

Energy currency/coin of cell is

zoology respiration and energy transfer active transport and passive transport types of plant transport atp

  1. ATP

  2. NAD

  3. ADP

  4. GDP

Show answer
Correct Option: A
Explanation:

ATP is adenosine triphosphate. It is formed of an adenine, a ribose and three phosphate radical attached to ribose. It is a storehouse of energy. It is found in all living cell. ATP is called energy currency as well as an energy carrier of the cell. ATP usually obtains energy during respiration. It provides energy for membrane transport, nerve conduction, cell movement, cell division etc. Breakage of one phosphate bond in the presence of ATP-ase and releases of 8.9Kcal per mole. Thus, the correct option is A.