What is respiration?

Content Writer-SME

“Respiration is a biological process that involves the exchange of two gases—carbon dioxide and oxygen—between cells, tissues, and the external environment”. This process begins with the intake of oxygen and is completed with the release of carbon dioxide in humans. Depending on the type of organism, the organs responsible for facilitating gaseous exchange vary such as:

Lungs- Humans
Gills- Fishes, Tadpole (Larval stage of frogs or toads), Molluscs, Worms
Trachea- Insects and Cockroaches
Skin- Frogs (Adult), and other Amphibians

The process of respiration is vital for the survival of living beings. It involves a sequence of biological reactions in which an organism's cells obtain energy by combining glucose and oxygen to release carbon dioxide, ATP, and water. The breakdown of glucose releases substantial energy in the form of adenosine triphosphate or ATP. This ATP serves as our cell's energy currency which is used in various biochemical processes in our body.

Types of Respiration

Respiration is tightly regulated to meet the body's energy requirements and is essential to preserve cellular activity. The two main classifications of respiration processes include:

Aerobic respiration:

Aerobic respiration is carried out in the presence of oxygen.
This respiration is seen in all higher animals and plants. Humans also respire through aerobic respiration.

ii. Anaerobic respiration:

Anaerobic respiration occurs in the absence of oxygen.
Bacteria and yeast breathe through the anaerobic mode of respiration.

Aerobic and Anaerobic Pathways in Respiration

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CBSE CLASS XII Related Questions

1.
Assertion (A) : The milk produced by transgenic cow 'Rosie' was nutritionally more balanced product for human babies than natural cow milk.
Reason (R) : It was human protein enriched milk containing human alpha lactaglobulin.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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Assertion (A) is true, but Reason (R) is false.
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2.
A student performed some crosses in plants and represented the result in the form of bar graphs as shown below. Each graph displays the phenotypic proportion of the progeny. Study the graphs and answer the questions :
(c) What conclusion can you draw from the results of bar graphs of crosses I and II ? Name the genetic principle illustrated.

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3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

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4.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

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5.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

25%
50%
75%
100%

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6.
Which of the following is a secondary consumer ?

Grasshopper
Cow
Fish
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What is respiration?

Types of Respiration

CBSE CLASS XII Related Questions

1.
Assertion (A) : The milk produced by transgenic cow 'Rosie' was nutritionally more balanced product for human babies than natural cow milk.
Reason (R) : It was human protein enriched milk containing human alpha lactaglobulin.

3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

5.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

6.
Which of the following is a secondary consumer ?

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What is respiration?

Types of Respiration

CBSE CLASS XII Related Questions

1.Assertion (A) : The milk produced by transgenic cow 'Rosie' was nutritionally more balanced product for human babies than natural cow milk. Reason (R) : It was human protein enriched milk containing human alpha lactaglobulin.

3.Assertion (A) : The two chains of DNA have antipolarity.Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

5.In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

6.Which of the following is a secondary consumer ?

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Assertion (A) : The milk produced by transgenic cow 'Rosie' was nutritionally more balanced product for human babies than natural cow milk.
Reason (R) : It was human protein enriched milk containing human alpha lactaglobulin.

3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

5.
In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

6.
Which of the following is a secondary consumer ?