Home
Class 11
BIOLOGY
About 98 per cent of the mass of every l...

About 98 per cent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:

A

calcium and phosphorous

B

Phosphorus and sulphur

C

Sulphur and magnesium

D

magnesium and sodium.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    JBD PUBLICATION|Exercise EXAMPLE|104 Videos
  • BIOLOGICAL CLASSIFICATION

    JBD PUBLICATION|Exercise EXAMPLE|96 Videos
  • CELL CYCLE AND CELL DIVISION

    JBD PUBLICATION|Exercise EXAMPLE|148 Videos

Similar Questions

Explore conceptually related problems

On strongs heating, One gram of the silver salt of an organic dibasic acid yields 0.5934 g of silver. If the mass percentage of carbon in it 8 times the mass percentage of hydrogen and one - half the mass percentage of oxygen, determine the molecular formula of the acid.

The normal activity of living carbon-containing matter is found to be about 15 decays per minute for every gram of carbon. This activity arises from the small proportion of radioactive "_6^14C present with the stable carbon isotope "_6^12C . When the organism is dead, its interaction with the atmosphere (which maintains the above equilibrium activity) ceases and its activity begins to drop. From the known half-life (5730 years) of "_6^14C , and the measured activity, the age of the specimen can be approximately estimated. This is the principle of "_6^14C dating used in archaeology. Suppose a specimen from Mohenjodaro gives an activity of 9 decays per minute per gram of carbon. Estimate the approximate age of the Indus-Valley civilisation.

An organic compound contains 4.07% hydrogen , 71.65% chlorine and remaining carbon. its molar mass is 98.96. Find its empirical formula.

JBD PUBLICATION-BIOMOLECULES-EXAMPLE
  1. About 98 per cent of the mass of every living organism is composed of ...

    Text Solution

    |

  2. Fill in the blanks: Lipids are …………..in water.

    Text Solution

    |

  3. Fill in the blanks: A true fat with three molecules of fatty acids is ...

    Text Solution

    |

  4. Fill in the blanks: Iodine number of fat is used to determine the degr...

    Text Solution

    |

  5. Fill in the blanks: Starch is the principal……………polysaccharide in plan...

    Text Solution

    |

  6. Fill in the blanks: Starch is a mixture of…………..

    Text Solution

    |

  7. Fill in the blanks: Hydrolysis of nucleic acids yield purine, sugra………...

    Text Solution

    |

  8. Fill in the blanks: DNA has ……………….instead of uracil.

    Text Solution

    |

  9. Fill in the blanks: Double helical structure is found in……………… .

    Text Solution

    |

  10. Fill in the blanks: A nucleotide molecule consists of three smaller mo...

    Text Solution

    |

  11. Fill in the blanks: There are two important purines:………………and………… .

    Text Solution

    |

  12. Fill in the blanks A protein molecule is a polymer of ……………..

    Text Solution

    |

  13. Fill in the blanks: The double helix model of DNA was proposed by……………...

    Text Solution

    |

  14. Fill in the blanks: Enzymatic activity stops due to…………of enzymes at v...

    Text Solution

    |

  15. Fill in the blanks: A compound with almost similar structure to the su...

    Text Solution

    |

  16. Fill in the blanks: ………………..are chemicals which limit or prevent the f...

    Text Solution

    |

  17. Fill in the blanks: Enzymes which breakdown comounds without the invol...

    Text Solution

    |

  18. Fill in the blanks: The function of enzyme is to lower the………….of a bi...

    Text Solution

    |

  19. Fill in the blanks: When the production of the cell is inhibited by it...

    Text Solution

    |

  20. Fill in the blanks: The number of molecules of a substrate acted upon ...

    Text Solution

    |

  21. Fill in the blanks: Loss of enzymatic activity of an enzyme due to mod...

    Text Solution

    |