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प्रश्न
Veins and arteries carry blood. Which of these carry blood away from the heart?
उत्तर
Arteries carry blood away from the heart.
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संबंधित प्रश्न
Given below are the end products of different reactions involving glucose.
Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
Where in the lungs does gas exchange take place?
What is the name of tiny air-sacs at the end of smallest bronchioles in the lungs?
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
Why do fishes die when taken out of water?
The breathing and respiration in woody stem of a plant takes place through:
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
What happens to the glucose which enters the nephron tubule alongwith the filtrate?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Epiglottis and _____________.
State one function of the following:
Intercostal muscles
With regard to the respiratory system and the process of respiration in man, answer the following question :
Give the overall chemical equation to represent the process of respiration in humans.
Air that enters through the nose passes into this tube.
The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______
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
During the process of exhalation, the ribs move
