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The linear chains of amino acids linked ...

The linear chains of amino acids linked by peptide bonds are called

A

fatty acids

B

carbohydrates

C

proteins

D

nucleic acid

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The correct Answer is:
C
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Enzymes are proteins, Proteins are long chains of amino acids linked to each other by peptide bonds. Amino acids have many functional groups in their structure. These functional groups are many of them at least, ionisable. As they are weak acids and bases in chemical nature, this ionisatio is infuluenced by pH of the solution. For many enzymes, activity is influenced by surrounding pH. This is depicted in the curve below, explain briefly.

The number of amino acids and number of peptide bonds in a linear tetrapeptide(made of different amino acids)are respectively_____.

In a protein, amino acids are linked by

The number of amino acids required to form a tripeptide bond are

The first amino acid in peptide chain is also called____

In a protein molecule, amino acids are linked by a peptide bond, which is formed by the reaction of

The linear arrangement of amino acid units in protien called:

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?

ARIHANT NEET-BIOMOLECULES AND ENZYMES-Chapter Exercises (A) Taking it together (Assorted Questions of the chapter for Advanced level practise)
  1. Which of the following is a basic amino acid?

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  2. In a protein molecule, amino acids are linked by a peptide bond, which...

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  3. The linear chains of amino acids linked by peptide bonds are called

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  4. How many amino acids are involved in stabilising protein molcules?

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  5. The primary structure of protein determines,

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  6. Which is type of secondary protein structure

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  7. Tertiary structure of proteins having amino acid cysteine is achieved ...

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  8. The globular proteins undergo structural change, in response to extrem...

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  9. If the sub-unit of protein are joined by bonds other than covalent bon...

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  10. During protein, denaturation one of the following is disrupted?

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  11. The function not normally subserved by proteins is

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  12. Relation between amino acid and protein is similar to one that found a...

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  13. Proteins perform many physiological functions. For example, some funct...

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  14. Which one of the follwing is a semi-essential amino acid?

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  15. The melting point of unsaturated fatty acids

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  16. Non-polar tails of lipids have

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  17. Doctors recommend sunflower oil as it is rich

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  18. Bee's wax consists of

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  19. Cerebrosides are

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  20. A group of proteins in living cells, which catalyses chemical reaction...

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