NEET BIOLOGY

Detailed explanation-1: -Nucleus is the controlling centre of a cell as it contains chromosomes and genes. Chromosomes contain the DNA which by transcription prepare RNA which in turn leads to the formation of proteins by translation. These proteins regulate the various metabolic processes going in the cell.

Detailed explanation-2: -Answer and Explanation: The nucleus is the part of the cell which controls reproduction.

Detailed explanation-3: -The nucleus is one of the most obvious parts of the cell when you look at a picture of the cell. It’s in the middle of the cell, and the nucleus contains all of the cell’s chromosomes, which encode the genetic material.

Detailed explanation-4: -The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.

Detailed explanation-5: -Cell growth, proliferation and differentiation are controlled largely by selective transcriptional modulation of gene expression in response to extracellular stimuli. Much of this transcriptional control is governed by the action of sequence-specific transcription factors.