Advertisements
Advertisements
प्रश्न
Which of the following increases in muscle cells when they are lacking in oxygen?
विकल्प
Carbon dioxide
Lactose
Lactic acid
Uric acid
उत्तर
Lactic acid
In the muscle cells that lack oxygen, the concentration of lactic acid is increased. This is because, here, anaerobic respiration takes place in which glucose is converted into lactic acid with the release of a small amount of energy.
APPEARS IN
संबंधित प्रश्न
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?
State whether the following statement is true or false:
during respiration, the plants take CO2 and release O2.
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
Describe the process of respiration in fish.
What type of repiration takes place in yeast?
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
An animal in which the oxygenation of blood does not take place in the lungs is:
Answer this question.
What are the holes on the sides of the body of insects called?
Name the body structure concerned with the given functional activity:
Combines with the oxygen in the lungs.
Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
|
(vi) a common passage for food and air |
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 |
Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.
Air that enters through the nose passes into this tube.
Identify the CORRECT sequence of events for the transport of respiratory gases.
Which of the following statement(s) is (are) true about respiration?
- During inhalation, ribs move inward and the diaphragm is raised
- In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air
- Haemoglobin has a greater affinity for carbon dioxide than oxygen
- Alveoli increase surface area for the exchange of gases
Name the energy currency in the living organisms. When and where is it produced?
Yeast is used in wine and beer industries because it respires
