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When we talk functional macromolecules (...

When we talk functional macromolecules ( e.g., proteins as enzymes, hormones, receptors, antibodies etc. ), towards what are they evolving ?

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Functional macromolecules are evolving towards creation of a complex organims. There are various evidence that are common to simple and complex forms of lite indicate common ancestry, e.g., histones protein tend to be well preserved among all eukaryotes, from amoebas to blue whale or to humans, with only one or two amino acids different.
The genetic code is nearly identical for all known life forms, from bacteria to archaea or animal and plants.
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Proteins are high molecular mass complex biomolecules of amino acids. The important proteins required for our body are enzymes, hormones, antibodies, transport proteins, structural proteins, contractile proteins etc. Except for glycine, all alpha -amino acids have chiral carbon atom and have L-configuration. The amino acids exists as dipolar ion called zwitter ion, in which a proton goes from the carboxyl group to the amino group. A large number of alpha -amino acids are joined by peptide bonds forming polypeptides. The peptides having very large molecular mass (more than 10,000) are called proteins. The structure of proteins is described as primary structure giving sequence of linking of amino acids, secondary structure giving manner in which polypeptide chains are arranged and folded, tertiary structure giving folding, coiling or bonding polypeptide chains producing three dimensional structures and quaternary structure giving arrangement of sub-units in an aggregate protein meolecule. All proteins on hydrolysis give

Proteins are high molecular mass complex biomolecules of amino acids. The important proteins required for our body are enzymes, hormones, antibodies, transport proteins, structural proteins, contractile proteins etc. Except for glycine, all alpha -amino acids have chiral carbon atom and have L-configuration. The amino acids exists as dipolar ion called zwitter ion, in which a proton goes from the carboxyl group to the amino group. A large number of alpha -amino acids are joined by peptide bonds forming polypeptides. The peptides having very large molecular mass (more than 10,000) are called proteins. The structure of proteins is described as primary structure giving sequence of linking of amino acids, secondary structure giving manner in which polypeptide chains are arranged and folded, tertiary structure giving folding, coiling or bonding polypeptide chains producing three dimensional structures and quaternary structure giving arrangement of sub-units in an aggregate protein meolecule. Which of the following alpha -amino acid does not form optical isomers?

Proteins are high molecular mass complex biomolecules of amino acids. The important proteins required for our body are enzymes, hormones, antibodies, transport proteins, structural proteins, contractile proteins etc. Except for glycine, all alpha -amino acids have chiral carbon atom and have L-configuration. The amino acids exists as dipolar ion called zwitter ion, in which a proton goes from the carboxyl group to the amino group. A large number of alpha -amino acids are joined by peptide bonds forming polypeptides. The peptides having very large molecular mass (more than 10,000) are called proteins. The structure of proteins is described as primary structure giving sequence of linking of amino acids, secondary structure giving manner in which polypeptide chains are arranged and folded, tertiary structure giving folding, coiling or bonding polypeptide chains producing three dimensional structures and quaternary structure giving arrangement of sub-units in an aggregate protein meolecule. Which of the following statements is not correct?

Identify the state function and path functions. (a) The change in potential energy when a book is transferred from table to shelf. (b) The heat evolved when a cube of sugar is oxidized to CO_(2(g)) and H_(2)O_((g)) . (c ) The work accomplished in burning a litre of gasoline.

Read the given paragraph and select the option that correctly fills the blanks in it. Hormones produce their effect on target tissue by binding to specific A called hormone receptors located in the target tissues only water soluble hormones usually need B receptor that generate C messenger for regulating through cell membrane and bind to E receptors, mostly nuclear receptors. The hormone receptor complex enter the nucleus and moslty regulate gene expression or chromosome function by interaction of hormone receptor complex with the genone.

NCERT EXEMPLAR-EVOLUTION-Evolution
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  2. How do we compute the age of a rock ?

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  3. When we talk functional macromolecules ( e.g., proteins as enzymes, ho...

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  4. In a certain population, the frequency of three genotypes is as follow...

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  5. Among the five factors that are known to affect Hardy- Weinberg equili...

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  6. What is founder effect ?

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  7. Who among the Drypithecus and Ramapithecus was more man like ?

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  8. By what Latin name, the first Hominid was known?

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  9. Among Ramapithecus, Australopithecines and Homo habilis who probably d...

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  10. Louis Pasteur's experiments, if you recall, proved that life can ar...

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  11. The scientist believe that evolution is gradual. But extinction, part ...

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  12. Why is nascent oxygen supposed to be toxic to aerobic life forms?

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  13. While creation and presence of variation is directionless, natural sel...

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  14. The evolutionary story of moths in England during industrialisation re...

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  15. Comment on the statement that ' evolution and natural selection are en...

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  16. State and explain any three factors affecting allele frequency in popu...

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  17. Gene flow occurs through generations. Gene flow can occur across langu...

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  18. How do you express the meaning of worlds like race, breed, cultivars o...

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  19. When we say ' survival of the fittest ' , does it mean that (a) tho...

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  20. Enumerate three most characteristic criteria for designating a Mendeli...

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