Question
Explain Miller's experiment on origin of life with diagram.
✓
Answer
$\rightarrow$ In $1953,$ an American scientist named $S. L.$ Miller created in the laboratory a condition similar to the Earth's primordial atmosphere.
$\rightarrow$ $He$ mixed $CH_4, H_2, NH_3$ and water vapour in a closed flask at a temperature of $800^\circ \ C$ and arranged the electrodes and gave electric shocks. Then the mixture was cooled in the condenser and made a liquid.
$\rightarrow$ $He$ Collected the liquid in a separate flask.
$\rightarrow$ After two weeks of the procedure, the fluid was analyzed by chromatography.
$\rightarrow$ $He$ found that amino acids were formed in it. Besides hydroxy acids $($scientific name of $H_2O)$ and aliphatic acids were also present.
$\rightarrow$ Similarly, other scientists have observed in this type of experiment that sugars, nitrogen bases, pigments and fats were produced.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Describe any three steps taken up by our Governmentto check population growth rate.
Answer the following questions:
What are mycorrhiza? How does it act as a biofertiliser?
What are mycorrhiza? How does it act as a biofertiliser?
A large number of married couples the world over are childless. It is shocking to know that in India the female partner is often blamed for the couple being childless.
Why in your opinion the female partner is often blamed for such situations in India?
Why in your opinion the female partner is often blamed for such situations in India?
Differentiate between Antigen and Antibody.
What are bioreactors? List five growth conditions that a bioreactor provides for obtaining the desired product.
Explain any three inbreeding devices in flowering plants.
Coconut palm is monoecious while date is dioecious. Why are they called so?
Some parents wrote a complaint letter to the local municipality to remove all the hoardings in the city, advertising the use of condoms and matters relating to AIDS prevention. The children of these parents came to know about the matter and raised their voice against removal of the hoardings. The parents were convinced by the awareness level of their children and withdrew the complaint.
- Parents considered the hoarding as inappropriate. Do you agree/ disagree with their view?
- What are the methods by which AIDS spreads?
- What is AIDS?
- What values are promoted by the children protesting against their parents?
A couple where both husband and wife are producing functional gametes, but the wife is still unable to conceive, is seeking medical aid. Describe any one method that you can suggest to this couple to become happy parents.
What are exotic species? Explain with the help of two examples how the exotic species disturb the native species of an ecosystem?