Which of the following is the structure for the amino acid with the abbreviation of Phe? A) "H,N-CH- CH, B) *H,N-CH-C-o CH2 он C) "HN-CH - CH2 CH -CH, CH3 D) "H,N-CH- CH2 SH MacBook Air

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Chapter1: Chemical Foundations
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**Which of the following is the structure for the amino acid with the abbreviation of Phe?**

A)
```
       O
       ||
*H₃N — CH — C — O⁻
       |
      CH₂
       |
      ⌬
```

B)
```
       O
       ||
*H₃N — CH — C — O⁻
       |
      CH₂
       |
      ⌬
       |
      OH
```

C)
```
       O
       ||
*H₃N — CH — C — O⁻
       |
      CH₂
       |
     CH — CH₃
       |
      CH₃
```

D)
```
       O
       ||
*H₃N — CH — C — O⁻
       |
      CH₂
       |
      SH
```

In this image, there are four different chemical structures labeled A, B, C, and D representing amino acids. The question asks which of these structures corresponds to the amino acid with the abbreviation "Phe". 

- **Option A**: This structure consists of an amino group (*H₃N—), attached to a central carbon (CH), which is bonded to a carboxyl group (C—O⁻). The side chain (R group) in this structure appears as a benzyl group (a benzene ring attached via CH₂).

- **Option B**: This structure follows a similar pattern to A but has an extra hydroxyl group (OH) attached to the benzene ring in the side chain.

- **Option C**: This structure features a side chain containing an isopropyl group (CH₂-CH-CH₃).

- **Option D**: This structure includes a side chain with a sulfhydryl group (SH) attached to a CH₂.

The correct answer is Option A (Phe - Phenylalanine).
Transcribed Image Text:**Which of the following is the structure for the amino acid with the abbreviation of Phe?** A) ``` O || *H₃N — CH — C — O⁻ | CH₂ | ⌬ ``` B) ``` O || *H₃N — CH — C — O⁻ | CH₂ | ⌬ | OH ``` C) ``` O || *H₃N — CH — C — O⁻ | CH₂ | CH — CH₃ | CH₃ ``` D) ``` O || *H₃N — CH — C — O⁻ | CH₂ | SH ``` In this image, there are four different chemical structures labeled A, B, C, and D representing amino acids. The question asks which of these structures corresponds to the amino acid with the abbreviation "Phe". - **Option A**: This structure consists of an amino group (*H₃N—), attached to a central carbon (CH), which is bonded to a carboxyl group (C—O⁻). The side chain (R group) in this structure appears as a benzyl group (a benzene ring attached via CH₂). - **Option B**: This structure follows a similar pattern to A but has an extra hydroxyl group (OH) attached to the benzene ring in the side chain. - **Option C**: This structure features a side chain containing an isopropyl group (CH₂-CH-CH₃). - **Option D**: This structure includes a side chain with a sulfhydryl group (SH) attached to a CH₂. The correct answer is Option A (Phe - Phenylalanine).
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