Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Trace elements are minerals required by microorganisms in minute amounts for proper physiological functions. They often act as cofactors in enzymatic reactions.
5 Must Know Facts For Your Next Test
Trace elements include metals like iron, zinc, and copper which are essential for enzyme activity.
Even though they are needed in tiny quantities, a deficiency or excess of trace elements can inhibit microbial growth.
Microorganisms acquire trace elements from their environment; some have specialized mechanisms to uptake these substances.
Trace elements can be involved in the redox reactions within a cell, playing a crucial role in energy production and metabolism.
Common methods to study trace element requirements include growth media supplementation and atomic absorption spectroscopy.
Review Questions
Related terms
Cofactor: A non-protein chemical compound that is required for the biological activity of a protein.
Redox Reaction: A chemical reaction involving the transfer of electrons between two species.
Growth Media: Substances used to support the growth of microorganisms or cells by providing essential nutrients.