cell nucleus
Học thuậtThân thiện
Definition
- Noun:
- The central, membrane-bound structure within a eukaryotic cell that contains the cell's genetic material (DNA) and RNA, and is responsible for regulating growth, metabolism, and reproduction.
Usage
- The term "cell nucleus" is used in biology to refer to the defining organelle of eukaryotic cells (cells with a nucleus). It is the control center of the cell.
- It is typically used in scientific, academic, and educational contexts.
Examples
- Noun:
- The cell nucleus contains chromosomes made of DNA.
- Scientists observed the division of the cell nucleus during mitosis.
- The function of the cell nucleus is to protect and organize the genetic material.
Advanced Usage
- "Nuclear envelope": The double membrane that surrounds the cell nucleus.
- The nuclear envelope regulates the passage of molecules into and out of the cell nucleus.
- "Nuclear pore": A protein-lined channel in the nuclear envelope that allows transport.
- RNA molecules exit the cell nucleus through nuclear pores.
Variants and Related Words
- Nucleus (n): Often used interchangeably with "cell nucleus" in biological contexts.
- The nucleus is the most prominent organelle.
- Nuclear (adj): Of or relating to a nucleus.
- Nuclear DNA is inherited from both parents.
- Nucleolus (n): A structure within the cell nucleus involved in ribosome synthesis.
- The nucleolus is visible within the nucleus.
Synonyms
- Nucleus: The core or central part (in a biological context, it is synonymous).
- Karyon: A less common biological term for the cell nucleus.
Related Phrases
- "Nuclear membrane": Another term for the nuclear envelope.
- The nuclear membrane breaks down during cell division.
- "Nuclear DNA": The DNA contained within the cell nucleus.
- Nuclear DNA provides the blueprint for the organism.
Related Idioms
- The original team formed the nucleus of the new company.
Noun
- a part of the cell containing DNA and RNA and responsible for growth and reproduction