GENERAL HISTOLOGY

Detailed explanation-1: -Besides the nucleus, two other organelles-the mitochondrion and the chloroplast-play an especially important role in eukaryotic cells. These specialized structures are enclosed by double membranes, and they are believed to have originated back when all living things on Earth were single-celled organisms.

Detailed explanation-2: -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.

Detailed explanation-3: -Cells also have a set of “little organs", called organelles, which are adapted and/or specialized for carrying out one or more vital functions. Organelles are found only in eukaryotes and are always surrounded by a protective membrane.

Detailed explanation-4: -Cells are made up of various cell organelles: Nucleus, nuclear membrane, chromosomes, endoplasmic reticulum, Golgi bodies, ribosomes, mitochondria, lysosomes, chloroplast, vacuoles, etc. The nucleus is the most important part of a cell.

Detailed explanation-5: -A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.