What are cells and their organelles?
An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body. Among the more important cell organelles are the nuclei, which store genetic information; mitochondria, which produce chemical energy; and ribosomes, which assemble proteins.
What is cell in PPT?
Cell is the basic Structural and functional unit of living organisms. In other words, cells make up living things and carry out activities that keep a living thing alive. … All living cells arise from pre-existing cells by division. The cell is the basic unit of structure and function in all living organisms.
What is an organelle?
Organelles are specialized structures that perform various jobs inside cells. … The term literally means “little organs.” In the same way organs, such as the heart, liver, stomach, and kidneys, serve specific functions to keep an organism alive, organelles serve specific functions to keep a cell alive.
What are the subcellular organelles?
The subcellular organelles of a typical mammalian cell include the nucleus (surrounded by a double membrane); the rough endoplasmic reticulum (RER); the smooth endoplasmic reticulum (SER); the Golgi complex; secretory vesicles; various endosomes; lysosomes; peroxisomes; and mitochondria (contains an inner and an outer …
What are cell organelles Class 9?
Organelles are special and organized structures seen in living cells. Some of the membrane-bound organelles are vacuoles, nucleus, chloroplasts, lysosomes etc. The nucleus is the largest organelle in the cell.
What is the main function of cell organelles?
Organelles are small structures within the cytoplasm that carry out functions necessary to maintain homeostasis in the cell. They are involved in many processes, for example energy production, building proteins and secretions, destroying toxins, and responding to external signals.
What is cell cycle PPT?
Cell Cycle • The cell cycle is a cycle of events that takes place in a cell which leads to the division of cell , formation of 2 daughter cells. • The Cycle consists of 5 major phases: G1, S, G2, mitosis, cytokinesis.