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प्रश्न
Why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?
उत्तर
In small unicellular animals, such as Amoeba, the volume of their body is so small that oxygen can be introduced quickly into the whole body by the process of diffusion. This is because the cell of Amoeba is so small that the oxygen does not have to go far. But in case of large multicellular animals like humans, the volume of the body is so big that oxygen cannot quickly diffuse into all the cells of the body. This is because in these cases, the oxygen has to travel a very large distance to reach each and every cell of the body.
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संबंधित प्रश्न
State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.
Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome
The mountaineers carry oxygen with them because ______.
What organs are attached to the two bronchi?
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
What is meant by aquatic animals and terrestrial animals?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
An animal in which the oxygenation of blood does not take place in the lungs is:
Tick the most appropriate answer.
The products of respiration are :
Answer the following in detail.
Explain the process of Cellular Respiration.
Choose the odd one out in the following groups of four items each:
Trachea, Ciliated epithelium, Mucous, Diffusion
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
What percent of oxygen is transported in a dissolved state by the plasma?
What is the ppCO2 in alveolar air?
The partial pressure of oxygen of blood in pulmonary capillaries is i ______ mrnHg while in alveolar air it is ii ______ mmHg.
Glycolysis process occurs in which part of the cell?
During respiration exchange of gases take place in
Mark the following statement as True or False. Correct the false statement.
Insects have spiracles on the lower surface of the body.
The exchange of gases in the leaves takes place with the help of __________.
