Answer: collagen.
- A collagen
- B keratin
- C myosin
- D actin
Correct answer: A. collagen
Explanation: Collagen is the most abundant, strength-giving protein of connective tissue.
The four basic animal tissue types and their core functions: epithelial (covering/lining), connective (support and transport), muscular (movement), and neural (signal conduction).
Concept context
The four basic animal tissue types (epithelial, connective, muscular, neural) and the cockroach as a model organism for organ-system level organisation.