Question

Who‌ ‌discovered‌ ‌the‌ ‌presence‌ ‌of‌ ‌nucleus‌ ‌in‌ ‌the‌ ‌cell?‌

Answer 1

The nucleus is a membrane-bound organelle present in eukaryotic cells in cell biology. While most eukaryotes have a single nucleus, certain cell types, such as mammalian red blood cells, have none, whereas others, such as osteoclasts, have several.

Complete answer:
The nucleus is a membrane-bound organelle present in eukaryotic cells in cell biology. While most eukaryotes have a single nucleus, certain cell types, such as mammalian red blood cells, have none, whereas others, such as osteoclasts, have several. The nuclear shell, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nuclear matrix (which contains the nuclear lamina), a network inside the nucleus that adds mechanical strength, similar to how the cytoskeleton protects the cell as a whole, are the two major components that make up the nucleus.
Other vertebrates' red blood cells, unlike human red blood cells, do have nuclei.
Franz Bauer described the nucleus in 1804 and Scottish botanist Robert Brown described it in greater detail in a talk at the Linnean Society of London in 1831. Brown was researching orchids under the microscope when he noticed an opaque region in the cells of the flower's outer layer that he called the "areola" or "nucleus." He didn't say something about a possible feature.
Robert Brown was the first to notice the nucleus in a cell. Brownian movement was also discovered in the protoplasm.
Brownian movement:
“Brownian motion is defined as the spontaneous movement of small particles suspended in fluids. Brownian movement” is a term used to describe this phenomenon. The collisions of the particles with other fast-moving particles in the fluid cause this motion.
Brownian motion is named after Scottish botanist Robert Brown, who discovered that when pollen grains are put in water, they travel in random directions. When a particle collides with another particle, it changes its direction. More collisions allow the particle to move in a zig-zag pattern. It entails a momentum/energy transfer or exchange between the particles.

Note:
Franz Bauer described the nucleus in 1804 and Scottish botanist Robert Brown described it in greater detail in a talk at the Linnean Society of London in 1831. Brown was researching orchids under the microscope when he noticed an opaque region in the cells of the flower's outer layer that he called the "areola" or "nucleus." He didn't say something about a possible feature.