Home
Class 12
CHEMISTRY
Name the lipids having perhydro-1, 2-cyc...

Name the lipids having perhydro-1, 2-cyclopentano-phenanthrene system. Name an important steroid formed in gall bladder and state its function.

Text Solution

Verified by Experts

Lipids having perhydro-1, 2-cyclopentano-phenanthrene system are called steroids. The important steroid formed in gall bladder is cholesterol. It is an essential component of cell membrane. It acts as a precursor during vitamin D and steroid synthesis.
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    CHHAYA PUBLICATION|Exercise Higher order thinking skill (HOTS) questions (Name the following )|6 Videos
  • BIOMOLECULES

    CHHAYA PUBLICATION|Exercise Entrance Questin Bank|40 Videos
  • BIOMOLECULES

    CHHAYA PUBLICATION|Exercise NCERT Exercise questions|25 Videos
  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos

Similar Questions

Explore conceptually related problems

Name one biologically important complex formed by a group-2 metal.

Volume of a sphere varies directly with the cube of its radius. Three solid spheres having length of 1""1/2,2and 2""1/2 metres diameter are melted and a new sphere is formed . Find the length of diameter of the new sphere. [Consider that the volume of sphere remains same before and after melting ]

Given below are four statements [1-4] regarding human blood circulatery system. 1.angina is acute chest pain when the blood circulation to the brain is reduced. 2.calcium ions play a very important role in blood clotting. 3.persons with blood group AB can donate blood to any person with any blood group under ABO system. 4.arteries are thick - walled and have narrow lumen as compared to veins. Which of these statements are correct?

Consider an ellipse x^2/a^2+y^2/b^2=1 Let a hyperbola is having its vertices at the extremities of minor axis of an ellipse and length of major axis of an ellipse is equal to the distance between the foci of hyperbola. Let e_1 and e_2 be the eccentricities of an ellipse and hyperbola respectively. Again let A be the area of the quadrilateral formed by joining all the foci and A, be the area of the quadrilateral formed by all the directrices. The relation between e_1 and e_2 is given by

(1) Give structure and IUPAC name of an optically active alkane having lowest molecular mass. Is there another alkane of the same molecular mass that is also optically active? (2) Give example of a compound which exhibits both optical & geometrical isomerism.

In the atmosphere, carbon dioxide is found in two forms, i.e., ^12CO_2 and ^14CO_2 . Plants absord CO_2 during photosynthesis in presence of chlorophyll, plants synthesise glucose 6CO_2 +6 H_2O rarr C_6H_12O_6 + 6O_2uarr Half life of ^14CO_2 is 5760 years. The analysis of wooden artifacts for ^14C and ^12C gives useful information for determination of its age. All living organisms, because of their constant exchange of Carbon dioxide with the surroundings have the same ratio of C-14 to C-12, i.e. 1.3xx10^-12 . When an organism dies, the C-14 in it keeps on decaying as follows: 6^14Crarr7^14N+(-1)^0e +Energy Thus, the ratio of C-14 and C-12 decreases with the passage of time. We can measure the proportion of C-14 in the remains of dead organism and determine how long ago it died. The method of carbon dating can be used to date anything made or organic matter, e.g., bone, skeleton, wood, etc. Using carbon dating, materials have been dated to about 50,000 years with accuracy. C-14 exists in atmosphere due to:

In the atmosphere, carbon dioxide is found in two forms, i.e., ^12CO_2 and ^14CO_2 . Plants absord CO_2 during photosynthesis in presence of chlorophyll, plants systhesise glucose 6CO_2 +6 H_2O rarr C_6H_12O_6 + 6O_2uarr Half life of ^14CO_2 is 5760 years. The analysis of wooden artifacts for ^14C and ^12C gives useful information for determination of its age. All living organisms, because of their constant exchange of Carbon dioxide with the surroundings have the same ratio of C-14 to C-12, i.e. 1.3xx10^-12 . When an organism dies, the C-14 in it keeps on decaying as follows: 6^14Crarr7^14N+(-1)^0e +Energy Thus, the ratio of C-14 and C-12 decreases with the passage of time. We can measure the proportion of C-14 in the remains of dead organism and determine how long ago it died. The method of carbon dating can be used to date anything made or organic matter, e.g., bone, skeleton, wood, etc. Using carbon dating, materials have been dated to about 50,000 years with accuracy. A piece of wood from an archeological source shows a C-14 activity which is 60% of the activity found in fresh wood today. The age of archeological sample will be:

1 C_5H_(12) and 2 C_8 H_(18) are two alkanes which form one monochloride each on reacting with chlorine. Write the names of the alkanes and structural formulas of the chlorides.

CHHAYA PUBLICATION-BIOMOLECULES-Higher order thinking skill (HOTS) questions
  1. How many chiral carbons are found in an aldohexose? How many D and L-i...

    Text Solution

    |

  2. Name the lipids having perhydro-1, 2-cyclopentano-phenanthrene system....

    Text Solution

    |

  3. What happens when glucose treated with dilute NaOH ?

    Text Solution

    |

  4. Which aldohexose other than D-glucose can produce the same dicarboxyli...

    Text Solution

    |

  5. Different value of specific rotation of optically active amino acids a...

    Text Solution

    |

  6. A tripeptide on complete hydrolysis produces glycine, alanine and phen...

    Text Solution

    |

  7. Why disaccharides obtained from monosaccharides like glucose (C(6)H(12...

    Text Solution

    |

  8. Write down the sytructural difference between amylopectin and cellulos...

    Text Solution

    |

  9. A DNA molecule has higher melting point having more number of GC pairs...

    Text Solution

    |

  10. Why glucose and fructose produce the same osazone?

    Text Solution

    |

  11. 2 DNA samples, X & Y have m.p 340 and 350 K respectively. Which sample...

    Text Solution

    |

  12. The structure of aspartame (a peptide and an artificial sweetener) is ...

    Text Solution

    |

  13. The structure of aspartame is given below: H(2)N - underset(underset...

    Text Solution

    |

  14. The structure of aspartame (a peptide and an artificial sweetener) is ...

    Text Solution

    |

  15. Explain why the k(a) and k(b) values of alpha-amino acids are very low...

    Text Solution

    |

  16. Distinguish between anomer and epimer with sultable examples?

    Text Solution

    |

  17. An optically active amino acid (A) having molecular formula C(5)H(11)N...

    Text Solution

    |

  18. A tetrapeptide on partial hydrolysis produces three dipeptides such as...

    Text Solution

    |

  19. Write the structure of serine at PH = 1 & PH =11

    Text Solution

    |

  20. Vitamin B complex is a combination of several other vitamin. Name the ...

    Text Solution

    |