The most abundant protein is dead epidermal structures such as hair and melanin.
Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment and are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
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Answer:
Loss of electrons and hydrogen ions are generally involved in oxidation reactions in biological systems
Explanation:
The substrates involved in the oxidation reaction in biological systems often loss hydrogen ion detached from itself and thereafter an electron is removed. The substrates are then oxidized by the addition of oxygen to the substrates.
These processes are catalyzed by Oxidoreductases and oxidation takes place alongside with reduction.
