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Discuss tool use among early hominins. What types of tools may have been used? When do stone tools appear and what might this mean? How might tool use have impacted hominin intelligence?
Protein
Large, complex molecules made up of amino acids that play many critical roles in the body, including providing structure to cells and facilitating biological reactions.
Irreversible Change
A permanent alteration of a substance or system from which recovery or return to the original condition is impossible under normal conditions.
Enzymes
Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
Organic Compounds
Chemical compounds that contain carbon-hydrogen bonds, including a wide range of substances such as fuels, plastics, food additives, and drugs.
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