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What are chemoautotrophs?...

What are chemoautotrophs?

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Organisms that use chemical energy for the synthesis of their food are called chemoautotrophs.
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Define chemoautotrophs.

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Following are the two statements regarding the origin of life : A. " " The earliest organisms that appeared on the earth were non-green and presumably anaerobes. B. " " The first autotrophic organisms were the chemoautotrophs that never relesed oxygen. Of the above statements which one of the following options is correct ?

NAVNEET PUBLICATION - MAHARASHTRA BOARD-ANSWER IN ONE SENTENCE-Photosynthesis
  1. How many NADPH(2) and ATP are required for the synthesis of one molecu...

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  2. Why is chlorophyll-a called an essential pigment?

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  3. What are chemoautotrophs?

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  4. What is plastidome?

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  5. Name the specific areas in membranes of thylakoids where photosyntheti...

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  6. Name the reaction centers of PS I and PS II.

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  7. Which ions are present in PS II? What role do the play?

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  8. What is hill reaction ? How it can be demonstrated ?

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  9. What are the two main types of carotenoids ? Name the two photosynthet...

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  10. What is chemiosmosis? Who proposed the chemiosmotic hypothesis?

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  11. Which is the first CO(2) acceptor in C(3) pathway?

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  12. In CAM plants, why is acid concentration increased during night?

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  13. What role do, calcium, magnesium and chloride ions play in photosynthe...

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  14. Who gave the law of limiting factors?

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  15. Give the summary equation of dark reaction.

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  16. Why have arid plants evolved C(4) pathway of photosynthesis?

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  17. Which is the ultimate pathway for fixing carbon dioxide (CO(2)) into g...

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  18. Which two unicellular algae were used by Ruben and Kamen to confirm th...

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  19. What was used to prove that the source of oxygen evolved during photos...

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  20. What is fret channel ? What is its function ?

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