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Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5?
- a)Only the amino group is ionized.
- b)Only the carboxylic acid group is ionized.
- c)Both amino and carboxylic acid groups are ionized.
- d)Both amino and carboxylic acid groups are neutral.
Correct answer is option 'A'. Can you explain this answer?
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Natural proteins are composed primarily of 20 α − amino aci...
Explanation:
Amino acids are composed of an amino group (-NH2), a carboxylic acid group (-COOH), and a side chain (-R). The pH of a solution determines the ionization state of these functional groups. At pH 1.5, the solution is acidic and protonated, which means that the concentration of H+ ions is high.
In this context, the correct answer is option 'A' - Only the amino group is ionized. Here's why:
• At pH 1.5, the carboxylic acid group (-COOH) is protonated and remains in its neutral form (-COOH). It does not donate a proton to the solution since there are already plenty of H+ ions available. Therefore, it is not ionized.
• On the other hand, the amino group (-NH2) can donate a proton to the solution and become ionized (-NH3+). This is because the high concentration of H+ ions in the acidic solution can accept the proton from the amino group. As a result, the amino group becomes charged and positively ionized.
• The side chain (-R) of an amino acid can also be ionized depending on its chemical nature, but this is not relevant for the question since it is not specified which amino acid is being considered.
Therefore, in a solution of pH 1.5, the carboxylic acid group of an amino acid is neutral, while the amino group is ionized and positively charged.
Amino acids are composed of an amino group (-NH2), a carboxylic acid group (-COOH), and a side chain (-R). The pH of a solution determines the ionization state of these functional groups. At pH 1.5, the solution is acidic and protonated, which means that the concentration of H+ ions is high.
In this context, the correct answer is option 'A' - Only the amino group is ionized. Here's why:
• At pH 1.5, the carboxylic acid group (-COOH) is protonated and remains in its neutral form (-COOH). It does not donate a proton to the solution since there are already plenty of H+ ions available. Therefore, it is not ionized.
• On the other hand, the amino group (-NH2) can donate a proton to the solution and become ionized (-NH3+). This is because the high concentration of H+ ions in the acidic solution can accept the proton from the amino group. As a result, the amino group becomes charged and positively ionized.
• The side chain (-R) of an amino acid can also be ionized depending on its chemical nature, but this is not relevant for the question since it is not specified which amino acid is being considered.
Therefore, in a solution of pH 1.5, the carboxylic acid group of an amino acid is neutral, while the amino group is ionized and positively charged.
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Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer?
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Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer?.
Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer?.
Solutions for Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for GATE.
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ample number of questions to practice Natural proteins are composed primarily of 20 α − amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5? a)Only the amino group is ionized. b)Only the carboxylic acid group is ionized. c)Both amino and carboxylic acid groups are ionized. d)Both amino and carboxylic acid groups are neutral.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice GATE tests.
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