The nucleus is the nucleus of the cell which contains most of the genes. The nucleus acts as a genetic control center surrounded by two parallel membranes. There are holes in the form of pores called cytoplasm. The nucleus is elliptical in shape which is protected by a nuclear membrane (nuclear membrane).
Quoting a book Biology: Volume 2, Cytoplasm is composed of cytosol. This arrangement is colloidal and organelles. In the cytosol there is a cell frame that functions to regulate the movement of cells and chromosomes.
There are four types of constituents of the nuclear membrane, namely nucleoplasm, chromosomes, and nucleolus. The nucleus plays an important role in regulating the development of cells. Following nuclear function in plant and animal cells.
Nucleus Function
- Controls metabolism in cells
- Regulates when gene expression starts, starts, and ends
- Place of replication (DNA multiplication) and transcription (DNA quoting)
- Stores genetic information in the form of DNA
- Controls cell growth
Nucleus Section
1. Nucleolus (nucleus)
The function of the nucleolus is the synthesis of various RNA (ribonucleic acid) molecules. The nucleolus is used for the assembly of ribosomes.
2. Nucleoplasm (nuclear fluid)
Nucleoplasm consists of substances composed of proteins, enzymes, water, ions, and nucleic acids. Nucleoplasmic properties such as gel, chromatic, or color-absorbing threads. Nucleoplasm plays a role in cell division.
3. Granular Chromatin
Within the nucleoplasm there are dividing cells called chromatic granules. The cells that will condense into threadlike structures called chromosomes. The function of chromosomes is to convey genetic information when synthesizing proteins.
Cell Structure
Living things are composed of one cell (unicellular) and many cells (multicellular). Each cell has a different function and structure. The following is the structure of cells in plants and animals:
1. Plasma membrane
The plasma membrane is the membrane that limits the contents of the cell and its surroundings. This membrane is composed of phospholipids and proteins (lipoproteins). The function of the plasma membrane is to protect and wrap the contents of the cell. In addition, the plasma membrane functions as a way for substances to enter and exit.
2. Nucleus
The nucleus is the cell nucleus which is protected by the nuclear membrane (nuclear membrane). Inside the nucleus is the control of cell activity. The nucleus consists of the nucleus (child nucleus), nucleoplasm (nuclear fluid), and chromatin granules.
3. Cytoplasm
Cytoplasm is the cell fluid inside the plasma membrane but outside the nucleus. The cytoplasm is composed of a cell framework (cytoskeleton) and organelles. The function of the cytoplasm is as a storage place for chemicals for metabolic processes. Chemicals consist of enzymes, proteins, and fats. In addition, the cytoplasm becomes a facilitator of organelles in moving cells.