Chemistry Crash Course JEE Main>Chapter 4 - Biomolecules>Level 3>Q 12

HARD

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IMPORTANT

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Amino acids are monomer of protein and these aminoacids are connected by peptide bond. A decapeptide (Mole wt. $796$ ) on complete hydrolysis gives glycine (Mole wt. $75$ ), alanine and phenylalanine. Glycine contributes $39.14 %$ to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is :

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Important Questions on Biomolecules

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Chemistry Crash Course JEE Main>Chapter 4 - Biomolecules>Level 3>Q 13

Question Image

The sum of total number of moles of ${PhNHNH}_{2}$ used with $[A]$ and $[B]$ is

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Chemistry Crash Course JEE Main>Chapter 4 - Biomolecules>Level 3>Q 14

Which of the following statements is not correct regarding the similarity between glucose and fructose?

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Chemistry Crash Course JEE Main>Chapter 4 - Biomolecules>Level 3>Q 15

Which of the list shown below have the correct pair of the structure of alanine in $pH$ ranges $2 - 4$ and $9 - 11$ is

I. $H_{3} \overset{+}{N} - CH ({CH}_{3}) {CO}_{2} H$

II. $H_{2} N - CH ({CH}_{3}) {CO}_{2}^{-}$

III. $H_{3} \overset{+}{N} - CH ({CH}_{3}) {CO}_{2}^{-}$

IV. $H_{2} N - CH ({CH}_{3}) {CO}_{2} H$

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Chemistry Crash Course JEE Main>Chapter 4 - Biomolecules>Level 3>Q 16

Glucose, heated with

{CH}_{3} OH

, in the presence of dry

HCl

gas, gives

α -

and

β -

methyl glucosides, because it contains