noun
- the larger of two nuclei in certain single-celled organisms, especially ciliates, that controls metabolic functions and gene expression
Usage: biology
Examples
- The paramecium’s macronucleus regulates daily cellular activities.
- Scientists observed the macronucleus dividing during cell reproduction.
- The macronucleus contains multiple copies of the organism’s genes.
- Researchers studied how the macronucleus controls protein synthesis.
- The ciliate’s macronucleus is much larger than its micronucleus.
- Damage to the macronucleus can disrupt the cell’s metabolism.