Final answer:
Hair, nails, and animal venom are biologically synthesized, using proteins and other compounds, while plant starch is also biologically created as a storage form of glucose through photosynthesis.
Step-by-step explanation:
The synthesis of hair, nails, animal venom, and plant starch is primarily a biological process. Hair and nails are structures composed of keratin, which is a type of protein. These structures grow from the epidermal layer of the skin, and serve various functions such as protection and sensory input.
In the case of animal venom, a specialized mixture of proteins and other compounds is created by certain species, such as snakes and spiders, and stored in glandular tissues. This venom often serves as a defense mechanism or as a way to subdue prey. Plant starch, on the other hand, is a carbohydrate storage form within plants, consisting of glucose polymers like amylose and amylopectin. It is synthesized through the process of photosynthesis, where excess glucose is stored as starch in different parts like roots and seeds.
Each of these substances - keratin, venom, and starch - are synthesized by living organisms to serve specific vital functions. While the biochemical processes involved in their creation are complex, they all represent the remarkable ways in which life has evolved mechanisms for growth, defense, and energy storage.