Class 10 Science - Chapter Life Processes NCERT Solutions | How is oxygen and carbon dioxide transpo
How is oxygen and carbon dioxide transported in human beings?
Exchange of the gases – oxygen and carbon dioxide, take place in various ways in the human beings.
Transport of the oxygen occurs in the two forms:- one is in the form of solution, dissolved oxygen in water and about 3% of the solution present in the plasma. And, another form is oxyhaemoglobin, about 97 percent of oxygen diffuses from plasma into the red blood cells and it loosely joins with iron of haemoglobin to form oxyhaemoglobin and then it combines with one oxygen molecule.
Carbon dioxide transport is carried by the blood in the three forms:- physical solution, bicarbonate ions and carbaminohemoglobin. About 7% of the carbon dioxide dissolves in the plasma and serve as a physical solution. In the bicarbonate ions 70% carbon dioxide released by tissue cells, diffuses into the plasma and then into the red blood cells. Carbon dioxide combines with water to form carbonic acid by the carbonic anhydrase enzyme, then this acid splits into bicarbonate and hydrogen ion. And, they are joined by the sodium and potassium to maintain pH of the blood. And about 23% of the CO2 enters into the red blood cells and combines with amino group of the reduced Hb (haemoglobin) to form carbaminohemoglobin.
More Questions From Class 10 Science - Chapter Life Processes
- Q:-
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
- Q:-
How is the amount of urine produced regulated?
- Q:-
What are the different ways in which glucose is oxidised to provide energy in various organisms?
- Q:-
What criteria do we use to decide whether something is alive?
- Q:-
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm. (c) chloroplast.
(b) mitochondria. (d) nucleus. - Q:-
What are the differences between autotrophic nutrition and heterotrophic nutrition?
- Q:-
What are the components of the transport system in highly organised plants?
- Q:-
What would be the consequences of a deficiency of haemoglobin in our bodies?
- Q:-
What are outside raw materials used for by an organism?
- Q:-
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Popular Questions of Class 10 Science
- Q:-
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
- Q:-
What is a good source of energy?
- Q:-
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
- Q:-
What changes can you make in your habits to become more environment-friendly?
- Q:-
What is the difference between a reflex action and walking?
- Q:-
What is the importance of DNA copying in reproduction?
- Q:-
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
- Q:-
Why should a magnesium ribbon be cleared before burning in air?
- Q:-
Define the principal focus of a concave mirror.
- Q:-
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Recently Viewed Questions of Class 10 Science
- Q:-
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
(a) The elements become less metallic in nature.
(b) The number of valence electrons increases.
(c) The atoms lose their electrons more easily.
(d) The oxides become more acidic. - Q:-
A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
- Q:-
Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V?
- Q:-
Name some devices in which electric motors are used.
- Q:-
What is the common name of the compound CaOCl2?
- Q:-
How do Mendel’s experiments show that traits may be dominant or recessive?
- Q:-
Food cans are coated with tin and not with zinc because
(a) zinc is costlier than tin.
(b) zinc has a higher melting point than tin.
(c) zinc is more reactive than tin.
(d) zinc is less reactive than tin. - Q:-
Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity - Q:-
What were the limitations of Newlands’ Law of Octaves?
- Q:-
Differentiate between metal and non-metal on the basis of their chemical properties.
- All Chapters Of Class 10 Science
- All Subjects Of Class 10