D. Differentiate between
1. external and internal respiration.
2. tracheae and bronchi.
3. aerobic and anaerobic respiration.
4. bronchi and alveoli.
Answers
Answer:
1.
Main Difference – Internal Respiration vs External Respiration
During the gas exchange in animals, oxygen and carbon dioxide diffuse in and out of the blood in lungs and metabolizing tissues. Oxygen is used in the cellular respiration, produces metabolic energy in order to carry out cellular functions. During cellular respiration, carbon dioxide is produced as a waste. The gas exchange occurs at the respiratory membrane in lungs and in metabolizing tissues like skeletal muscles. The partial pressure gradient of each gas determines the direction and the rate of diffusion across the respiratory membrane. The main difference between internal respiration and external respiration is that internal respiration refers to the gas exchange across the respiratory membrane in the metabolizing tissues whereas external respiration refers to the gas exchange across the respiratory membrane of lungs.
2. The main difference between trachea and bronchi is that the trachea is the airway that connects the larynx to the bronchi whereas the bronchi are the two branching airways that lead to the lungs. Both trachea and bronchi consist of respiratory mucosa with mucus-secreting cells.
3. Aerobic respiration takes place in presence of oxygen; whereas anaerobic respiration takes place in absence of oxygen. Carbon dioxide and water are the end products of aerobic respiration, while alcohol is the end product of anaerobic respiration. Aerobic respiration releases more energy than anaerobic respiration.
4. Bronchi are surrounded by cartilaginous layer. Bronchi are involved in the conduction of air to the bottom part of the respiratory passageway. alveoli conduct air, and they are also involved in the gas exchange as alveoli. The main difference between bronchi and alveoli is their structure and function.
Explanation:
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Answer:
1. Difference between external and internal respiration are:-
In external respiration there is uptake of oxygen from the surrounding environment (air or water medium) and elimination of carbon dioxide into that medium. The exchange of gases takes place by diffusion across the general body or respiratory surfaces. It is a purely physical process and in this process no energy is produced.
In internal respiration there are both oxidative and non-oxidative enzymatic reactions by which energy is. made available to maintain the various vital activities. It is a physio-chemical process and in this process energy is produced.
2. Difference between tracheae and bronchi are:-
The main difference between trachea and bronchi is that the trachea is the airway that connects the larynx to the bronchi whereas the bronchi are the two branching airways that lead to the lungs. Both trachea and bronchi consist of respiratory mucosa with mucus-secreting cells.
3. Difference between aerobic and anaerobic respiration are:-
Aerobic respiration, as the name suggests, is the process of producing the energy required by cells using oxygen. ... Anaerobic respiration is similar to aerobic respiration, except, the process happens without the presence of oxygen. Consequently, the by-products of this process are lactic acid and ATP.
4. Difference between bronchi and alveoli are:-
"Alveoli” is the plural term for “alveolus.” An alveolus is a tiny, air sac which is found at the tip of the smallest tube airways called bronchioles. Bronchi” is the plural term for “bronchus.” We have two major bronchi, the right and the left. The right bronchus is typically larger than the left.
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