Anaerobic reaction and respiratory quotient — lesson. Science State Board, Class 10.

PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo

Anaerobic respiration:

It is a type of respiration that occurs without oxygen.

The process of respiration that occurs in the absence of oxygen is known as anaerobic respiration.

The process of anaerobic respiration

During this respiration glucose is converted into ethanol.

The general equation of anaerobic respiration is:

C_{6} H_{12} O_{6} \to 2 C O_{2} + 2 C_{2} H_{2} OH + Energy (ATP)

Glucose Ethanol

Based on the end products and the organism in which it occurs anaerobic respiration is of two types.

Alcoholic fermentation: It occurs in yeast
Lactic acid fermentation: It occurs in bacteria

Production of ethyl alcohol

Lactic acid fermentation

Respiratory quotient (R.Q):

The ratio of volume of carbon dioxide liberated and the volume of oxygen consumed during respiration is known as respiratory quotient.

It is calculated by using the following formula.

RQ = \frac{Volume of {CO}_{2} liberated}{Volume of O_{2} consumed}

Differences between aerobic and anaerobic respiration:

S.No	Aerobic respiration	Anaerobic respiration
1.	It occurs in the presence of oxygen.	It occurs in the absence of oxygen
2.	Carbon dioxide, water and ATP are its products.	Lactic acid, ethanol and ATP are its products.
3.	It occurs in 3 steps: Glycolysis Kreb's cycle Electron transport chain	It occurs in 3 steps: Glycolysis Fermentation (ethyl alcohol or lactic acid are produced)

Differences between light-dependent and light independent reaction:

S.No	Light-dependent reaction	Light independent reaction
1.	It is also known as Hill reaction or light reaction.	It is also known as dark reaction or biosynthetic pathway or Calvin cycle.
2.	These reactions occurs in the thylakoid membranes (Grana) of the chloroplast.	These reactions occur in the stroma of the chloroplast.
3.	During these reactions the photosynthetic pigments absorb the light energy and convert it into chemical energy such as ATP and \(NADPH_2\).	During these reactions \(CO_2\) is reduced into carbohydrates by using the ATP and \(NADPH_2\).
4.	These reactions occur in the presence of light.	These reactions occur in the absence of light.

Reference:

https://www.vecteezy.com/vector-art/1424977-alcoholic-fermentation-chemical-equation
https://commons.wikimedia.org/wiki/File:Figure_07_05_02.png
https://commons.wikimedia.org/wiki/File:Anaerobic_diagram.png

Previous theory

Exit to the topic

Next theory

Send feedback

Did you find an error?

Send it to us!

10. Anaerobic reaction and respiratory quotient

Theory: