## Collagen Structure Formation and Protein Modules### Collagen Structure FormationThe formation of the most abundant collagen in the body involves the production of various structures:1. **Type I collagen fiber**2. **Procollagen**3. **Crosslinked collagen fiber**4. **Tropocollagen****Question:** The correct order these structures are produced is:a) 1, 2, 3, 4 b) 3, 1, 4, 2 c) 2, 4, 1, 3 d) 4, 2, 1, 3 e) 4, 3, 2, 1 ### Protein Modules or Domains**Question:** Which of the following is *not* correct regarding protein modules or domains such as the immunoglobulin module, growth factor module, and fibronectin module?a) Each type of module is found in a variety of proteins b) Modules are typically 40 to 100 amino acids in length c) They can be present in multiple copies in the same protein d) Modules of a certain type usually have the same tertiary structure e) They always have the same function in different proteins ### ExplanationCollagen is a critical component of the extracellular matrix and follows a specific order during biosynthesis. Understanding this order and the properties of protein modules helps in comprehending how biological structures and systems are formed and operate within the body.

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Biochemistry

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Chapter1: Biochemistry: An Evolving Science

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The formation of the most abundant collagen in the body involves the production of a number of structures: (1) Type I collagen fiber, (2) procollagen, (3) crosslinked collagen fiber, (4) tropocollagen. The correct order these structures are produced is: 3.