(C) Lysine and tryptophan are essential amino acids. They are considered essential because the human body cannot synthesize them and they must be obta

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(C) Lysine and tryptophan are essential amino acids. They are considered essential because the human body cannot synthesize them and they must be obtained through the diet. In the context of plant breeding,these are often referred to as limiting amino acids in cereal crops.

Class 11 Biology Biomolecules Proteins

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What are lysine and tryptophan?

A
Lipids
B
Proteins
C
Amino acids
D
Vitamins

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Biomolecules

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Proteins

Which bond is formed by the $-COOH$ and $-NH_2$ groups of two similar or dissimilar amino acids?

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Feathers and silk commonly contain . . . . . . .

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Match the following columns:

Column-$I$ (Protein) Column-$II$ (Function)

$P$. Collagen $I$. Hormone

$Q$. Trypsin $II$. Sensory receptor

$R$. Insulin $III$. Fights infectious agents

$S$. Antibody $IV$. Enzyme

$T$. Receptor $V$. Intercellular ground substance

$U$. $GLUT-4$ $VI$. Enables glucose transport into cells

Column-$I$ (Protein)	Column-$II$ (Function)
$P$. Collagen	$I$. Hormone
$Q$. Trypsin	$II$. Sensory receptor
$R$. Insulin	$III$. Fights infectious agents
$S$. Antibody	$IV$. Enzyme
$T$. Receptor	$V$. Intercellular ground substance
$U$. $GLUT-4$	$VI$. Enables glucose transport into cells