Trace element

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

1. Trace elements include metals like iron, zinc, and copper which are essential for enzyme activity.
2. Even though they are needed in tiny quantities, a deficiency or excess of trace elements can inhibit microbial growth.
3. Microorganisms acquire trace elements from their environment; some have specialized mechanisms to uptake these substances.
4. Trace elements can be involved in the redox reactions within a cell, playing a crucial role in energy production and metabolism.
5. Common methods to study trace element requirements include growth media supplementation and atomic absorption spectroscopy.

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.