write the structure and function of the following Q1) 1) nucleus 2)endoplasmic reticulum 3) mitochondria
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Answer:
1)The nucleus is a spherical-shaped organelle that is present in every eukaryotic cell. The nucleus is the control centre of eukaryotic cells. It is also responsible for the coordination of genes and gene expression. The structure of the nucleus includes nuclear membrane, chromosomes, nucleoplasm, and nucleolus.
2)The endoplasmic reticulum (ER) is a large, dynamic structure that serves many roles in the cell including calcium storage, protein synthesis and lipid metabolism. The diverse functions of the ER are performed by distinct domains; consisting of tubules, sheets and the nuclear envelope.
3)Mitochondria are membrane-bound cell organelles (mitochondrion, singular) thatgenerate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).