а. но H онн || | | H3N-C-C-N-CH-C-Ń-C-Coo CH2 HC-OH ČH3 NH2 b. нон онн | | H3Ñ-c-C-N-CH-C-N-C-coo | ! ! ČH3 HC-CH3 CH2 CH2 CH2 CH3 CH3

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Use three-letter amino acid abbreviations to write the amino acid sequence for the tripeptide shown in each question. 

The image contains two chemical structures labeled as "a." and "b." Each structure is drawn with empty boxes beneath them.

**a. Chemical Structure:**

- **Molecule Description:**
  - The structure features a peptide chain with an amine group (NH₃⁺) at the beginning.
  - It consists of a main backbone with alternating carbon (C) and nitrogen (N) atoms.
  - Side groups include:
    - CH₂ linked to an amide group (CONH₂).
    - A hydroxyl group (OH) bonded to a CH group with a methyl group (CH₃).
  - It ends with a carboxylate group (COO⁻).

- **Boxes:**
  - Three empty boxes are aligned horizontally beneath the structure, likely intended for labeling the components or amino acids in the sequence.

**b. Chemical Structure:**

- **Molecule Description:**
  - Another peptide chain starting with an amine group (NH₃⁺).
  - The backbone alternates between carbon (C) and nitrogen (N) atoms as well.
  - Side chains include:
    - A methyl group (CH₃).
    - An isopropyl group (CH–CH₃) with an additional CH₂ on the second carbon.
    - A chain containing CH₂, CH₂, sulfur (S), and another CH₃ group.
  - Ends with a carboxylate group (COO⁻).

- **Boxes:**
  - Three empty boxes are aligned horizontally below this structure, also likely meant for labeling.

These structures represent portions of peptides with specific side chains, which could be used to illustrate concepts in protein chemistry, such as amino acid composition and peptide bonding.
Transcribed Image Text:The image contains two chemical structures labeled as "a." and "b." Each structure is drawn with empty boxes beneath them. **a. Chemical Structure:** - **Molecule Description:** - The structure features a peptide chain with an amine group (NH₃⁺) at the beginning. - It consists of a main backbone with alternating carbon (C) and nitrogen (N) atoms. - Side groups include: - CH₂ linked to an amide group (CONH₂). - A hydroxyl group (OH) bonded to a CH group with a methyl group (CH₃). - It ends with a carboxylate group (COO⁻). - **Boxes:** - Three empty boxes are aligned horizontally beneath the structure, likely intended for labeling the components or amino acids in the sequence. **b. Chemical Structure:** - **Molecule Description:** - Another peptide chain starting with an amine group (NH₃⁺). - The backbone alternates between carbon (C) and nitrogen (N) atoms as well. - Side chains include: - A methyl group (CH₃). - An isopropyl group (CH–CH₃) with an additional CH₂ on the second carbon. - A chain containing CH₂, CH₂, sulfur (S), and another CH₃ group. - Ends with a carboxylate group (COO⁻). - **Boxes:** - Three empty boxes are aligned horizontally below this structure, also likely meant for labeling. These structures represent portions of peptides with specific side chains, which could be used to illustrate concepts in protein chemistry, such as amino acid composition and peptide bonding.
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