Histidine is easily dissolved in water, due in part to its ability to form hydrogen bonds. A histidine molecule and six water molecules are represented in the diagram below. Identify which dashed lines between the molecules DO NOT represent hydrogen bonding between histidine and water. Select all that applies. nd H Of H None of these H H- H H H a C CH₂ H-C H d -H----C H H H H H

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Chapter1: Chemical Foundations
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**Educational Website Text:**

Histidine is easily dissolved in water, due in part to its ability to form hydrogen bonds. A histidine molecule and six water molecules are represented in the diagram below. Identify which dashed lines between the molecules DO NOT represent hydrogen bonding between histidine and water. Select all that apply.

**Diagram Explanation:**

The diagram illustrates a histidine molecule interacting with six water molecules. Several dashed lines denote potential hydrogen bonds between specific atoms of the histidine and water molecules. These dashed lines are labeled as follows:

- **a**: Dashed line connecting the hydrogen of a water molecule to the nitrogen of histidine.
- **b**: Dashed line connecting the hydrogen of a water molecule to the oxygen of histidine.
- **c**: Dashed line connecting the oxygen of a water molecule to a hydrogen in histidine.
- **d**: Dashed line connecting a hydrogen from a water molecule to a carbon-hydrogen bond on histidine.
- **e**: Dashed line connecting a hydrogen from a water molecule to an oxygen in a carbonyl group of histidine.
- **f**: Dashed line connecting the hydrogen of a water molecule to an oxygen atom in histidine.

**Options to Select:**

- [ ] a
- [ ] b
- [ ] c
- [ ] None of these
- [ ] d
- [ ] e
- [ ] f

This problem requires identifying which interactions do not constitute hydrogen bonding between the histidine and water molecules.
Transcribed Image Text:**Educational Website Text:** Histidine is easily dissolved in water, due in part to its ability to form hydrogen bonds. A histidine molecule and six water molecules are represented in the diagram below. Identify which dashed lines between the molecules DO NOT represent hydrogen bonding between histidine and water. Select all that apply. **Diagram Explanation:** The diagram illustrates a histidine molecule interacting with six water molecules. Several dashed lines denote potential hydrogen bonds between specific atoms of the histidine and water molecules. These dashed lines are labeled as follows: - **a**: Dashed line connecting the hydrogen of a water molecule to the nitrogen of histidine. - **b**: Dashed line connecting the hydrogen of a water molecule to the oxygen of histidine. - **c**: Dashed line connecting the oxygen of a water molecule to a hydrogen in histidine. - **d**: Dashed line connecting a hydrogen from a water molecule to a carbon-hydrogen bond on histidine. - **e**: Dashed line connecting a hydrogen from a water molecule to an oxygen in a carbonyl group of histidine. - **f**: Dashed line connecting the hydrogen of a water molecule to an oxygen atom in histidine. **Options to Select:** - [ ] a - [ ] b - [ ] c - [ ] None of these - [ ] d - [ ] e - [ ] f This problem requires identifying which interactions do not constitute hydrogen bonding between the histidine and water molecules.
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