Question:
The list given below contains essential amino acids that are basic (\(X\)) and also non essential amino acids that are neutral \(Y\). \(X\) and \(Y\) respectively are:
• [a)] Lysine
• [b)] Alanine
• [c)] Serine
• [d)] Arginine
• [e)] Tyrosine
The list given below contains essential amino acids that are basic (\(X\)) and also non essential amino acids that are neutral \(Y\). \(X\) and \(Y\) respectively are:
• [a)] Lysine
• [b)] Alanine
• [c)] Serine
• [d)] Arginine
• [e)] Tyrosine
• [a)] Lysine
• [b)] Alanine
• [c)] Serine
• [d)] Arginine
• [e)] Tyrosine
Show Hint
To remember the basic amino acids instantly, use the mnemonic "HAL" (Histidine, Arginine, Lysine). Since Lysine (\(a\)) and Arginine (\(d\)) are the main basic amino acids from this list, grouping them together under category \(X\) lets you lock down the correct answer choice immediately!
Updated On: Jun 3, 2026
- \( X = b, c, e \quad Y = a, d \)
- \( X = a, d \quad Y = b, c, e \)
- \( X = a \quad Y = b, d, e \)
- \( X = a, b, c \quad Y = d, e \)
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Amino acids are classified based on two main criteria:
• Nutritional Requirement:
• Essential Amino Acids: Cannot be synthesized by the body and must be supplied in the diet (e.g., Lysine, Arginine, Valine, Leucine, Isoleucine, Threonine, Methionine, Phenylalanine, Tryptophan, Histidine).
• Non-Essential Amino Acids: Can be synthesized by the body internally (e.g., Alanine, Serine, Tyrosine, Glycine, Aspartic acid, Glutamic acid).
• Chemical Nature (Side chain properties):
• Basic Amino Acids: Contain extra amino groups (\(-\text{NH}_2\)) relative to carboxyl groups in their side chains, giving them a net positive charge at physiological pH (e.g., Lysine, Arginine, Histidine).
• Neutral Amino Acids: Contain an equal number of amino and carboxyl groups, and their side chains do not carry a net charge (e.g., Alanine, Serine, Tyrosine, Glycine, Valine).
Step 1: Evaluating category \(X\): Essential and basic amino acids.
Let's analyze the given options for set \(X\):
• a) Lysine: It is an essential amino acid and contains an extra \((-\text{NH}_2)\) group in its aliphatic side chain. Thus, it is basic.
• d) Arginine: It is an essential (semi-essential) amino acid and contains a highly basic guanidino group in its side chain. Thus, it is basic. Therefore, \(X = \{a, d\}\).
Step 2: Evaluating category \(Y\): Non-essential and neutral amino acids.
Let's analyze the remaining options for set \(Y\):
• b) Alanine: Synthesized naturally by the body (non-essential) and features a simple methyl group side chain (neutral).
• c) Serine: Synthesized by the body (non-essential) and features a polar hydroxymethyl side chain (neutral).
• e) Tyrosine: Formed from phenylalanine inside the body (non-essential) and contains a phenolic side chain that is uncharged at physiological pH (neutral). Therefore, \(Y = \{b, c, e\}\). Combining both results yields the set configuration: \(X = a, d\) and \(Y = b, c, e\), which corresponds perfectly to option (B).
• Nutritional Requirement:
• Essential Amino Acids: Cannot be synthesized by the body and must be supplied in the diet (e.g., Lysine, Arginine, Valine, Leucine, Isoleucine, Threonine, Methionine, Phenylalanine, Tryptophan, Histidine).
• Non-Essential Amino Acids: Can be synthesized by the body internally (e.g., Alanine, Serine, Tyrosine, Glycine, Aspartic acid, Glutamic acid).
• Chemical Nature (Side chain properties):
• Basic Amino Acids: Contain extra amino groups (\(-\text{NH}_2\)) relative to carboxyl groups in their side chains, giving them a net positive charge at physiological pH (e.g., Lysine, Arginine, Histidine).
• Neutral Amino Acids: Contain an equal number of amino and carboxyl groups, and their side chains do not carry a net charge (e.g., Alanine, Serine, Tyrosine, Glycine, Valine).
Step 1: Evaluating category \(X\): Essential and basic amino acids.
Let's analyze the given options for set \(X\):
• a) Lysine: It is an essential amino acid and contains an extra \((-\text{NH}_2)\) group in its aliphatic side chain. Thus, it is basic.
• d) Arginine: It is an essential (semi-essential) amino acid and contains a highly basic guanidino group in its side chain. Thus, it is basic. Therefore, \(X = \{a, d\}\).
Step 2: Evaluating category \(Y\): Non-essential and neutral amino acids.
Let's analyze the remaining options for set \(Y\):
• b) Alanine: Synthesized naturally by the body (non-essential) and features a simple methyl group side chain (neutral).
• c) Serine: Synthesized by the body (non-essential) and features a polar hydroxymethyl side chain (neutral).
• e) Tyrosine: Formed from phenylalanine inside the body (non-essential) and contains a phenolic side chain that is uncharged at physiological pH (neutral). Therefore, \(Y = \{b, c, e\}\). Combining both results yields the set configuration: \(X = a, d\) and \(Y = b, c, e\), which corresponds perfectly to option (B).
Was this answer helpful?
0
0
Top AP EAPCET Chemistry Questions
- The four quantum numbers of the valence electron of potassium are :
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
- In which of the following the election gain enthalpy of elements is correctly arranged?
- The radii of $ \text{F,}{{\text{F}}^{-}}\text{O} $ and $ {{\text{O}}^{2-}} $ are in the order
- Which of the following has the highest first ionization potential?
View More Questions
Top AP EAPCET Amino Acids Questions
- The number of essential and non-essential amino acids from the following list respectively is Given amino acids: Val, Gly, Leu, Lys, Pro, Ser
- Glycylalanine is a dipeptide formed by the minimum instruction time. It is made up of which amino acids?
- Consider the following statements:
Statement-I: Lysine, arginine are essential and basic amino acids.
Statement-II: Leucine, phenyl alanine are non-essential and neutral amino acids.
Which of the following is correct? - Study the following list: I. Lys, II. Gln, III. Ser, IV. Cys, V. Tyr, VI. Asn. X is the set of amino acids containing -OH group and Y is the set of amino acids containing -CONH$_2$ group. What are X and Y respectively?
- Glycylalanine is a dipeptide of which amino acids?
View More Questions
Top AP EAPCET Questions
- A body is projected from the ground at an angle of $\tan^{-1} \left( \frac{8}{7}\right)$ with the horizontal. The ratio of the maximum height attained by it to its range is
- The four quantum numbers of the valence electron of potassium are :
- A lens forms real and virtual images of an object, when the object is at $u_{1}$ and $u_{2}$ distances respectively. If the size of the virtual image is double that of the real image, then the focal length of the lens is (take, the magnification of the real image as $m$ )
- Two spheres $P$ and $Q$, each of mass $200\, g$ are attached to a string of length one metre as shown in the figure. The string and the spheres are then whirled in a horizontal circle about $O$ at a constant angular speed. The ratio of the tension in the string between $P$ and $Q$ to that of between $P$ and $O$ is $(P$ is at mid-point of the line joining $O$ and $Q$ )
- The volume of $0.02\, M$ acidified permanganate solution required for complete reaction of $60\, mL$ of $0.01\, MI^{-}$ ion solution to form $I_2$ in $mL$ is
View More Questions