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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Define α-amino acids. - Chemistry

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प्रश्न

Define α-amino acids.

व्याख्या
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उत्तर

α-Amino acids are carboxylic acids having an amino (–NH2) group bonded to the α-carbon, that is, the carbon next to the carboxyl (–COOH) group.

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पाठ 14: Biomolecules - Short Answer Questions (Type-II)

संबंधित प्रश्‍न

Give scientific reasons:

On boiling egg albumin becomes opaque white.


Write the names and schematic representations of all the possible dipeptides formed from alanine, glycine and tyrosine.


In the process of denaturation, there is NO change in the structure following protein.


Write the number of chiral carbon atoms present in fructose.


Explain denaturation of proteins.


Explain the primary structure of proteins.


From the following identify the INCORRECT match with respect to the different structures of proteins.


____________ is NOT a simple protein.


Nucleotide differs from a nucleoside as it has ______


Purine and pyrimidine bases are placed regularly along the DNA molecules at a distance of ______


Identify the option that correctly describes the amphoteric nature of proteins.


Identify (i) and (ii) and select the correct option.

i. Protein portion of the enzyme is called the ____________.

ii. Non-protein constituent binding to the enzyme is called as the ____________.


Which of the following contains keratin?


Identify the enzyme X in the following reaction.

\[\ce{H2O2(aq) ->[x] H2O(l) + \frac{1}{2} O2(g)}\]


Complete the analogy and select the correct option.

α-helix structure : Keratin :: β-pleated sheet : ____________.


The bacteriostatic antibiotic from the following is ______.


β-pleated sheets of polypeptide chains are present in ______.


Which of the following amino acids has \[\ce{Me - S - CH2 - CH2 -}\] group in the side chain?


The amino acid having −CH3 as side chain is ____________.


The molecular weight of hemoglobin is ______ Daltons.


The most abundant cellular protein is ______.


A protein is a sequence of amino acids. The end of the polypeptide chain of -NH2 end and at -COOH end are respectively called ______.


Identify basic amino acid from following.


Which of the following molecules from a zwitter ion?


Which of the following amino acids has –CH2OH group in its side chain?


Which among the following amino acids has the lowest molecular mass?


Identify the side chain –R present in amino acid lysine.


The central dogma of molecular genetics states that the genetic information flows from:


In a protein, various amino acids linked together by ____________.


In aqueous solution of amino acids mostly exists in, ____________.


Among the following L-serine is:


The secondary structure of a protein refers to ____________.


Give the differences between the primary and secondary structure of proteins.


Write a note on denaturation of proteins.


Which of the following amino acid is basic in nature?


Amino acids in a protein molecule, are linked by a peptide bond. Which of the following correctly shows the reaction of forming peptide bonds?


Tertiary structure of protein is stabilised by ______.


Peptide and hydrogen bonds are present in the primary structure of the protein which is due to ______.


The tightly bound non-proteinaceous organic compound in enzyme is ______.


Write a short note on peptide bond.


Write the Zwitter ion structure of alanine.


Write the Zwitter ion structure of alanine.


Write a short note on peptide bond.


Write a short note on peptide bond.


Write a short note on peptide bond.


Given below are two statements.
Statement I- Most of the blood proteins are acidic proteins.
Statement II - Derived proteins are not found in nature.
In the light of above statements, Select the correct option given below.


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