Nucleus Organelles

Every living thing in the world, large, or small, plant or animal, are made up of cells. All living things are composed of basic building blocks of life called cells. Cells are special; they vary in shape and size. Cells can be round, square, spindle-shaped and star-like (Cells, 2017). Cells carry out many roles inside your body. For instance, the macrophage is large white blood cells that is part of our immune system and is responsible for locating and eating microscopic foreign bodies. Epithelial cells protect the surface of our bodies as part of the skin. Cells in the immune system fight bacteria. Each cell plays an important role in the growth and development of our bodies.
Despite the difference in all living organisms, no matter how diverse,
The nucleus is mostly round, however it may be oval or disc shaped, depending on the type of cell. Nucleus, also known as “the brain” of the cell, contains most of the genetic material of the cell, called DNA, and is responsible for controlling the cells function. The nucleus is the largest organelle. It occupies 10% of the total volume of the cell. The large structure of the nucleus, allows it to maintain more information and genetic material.
The nucleus is surrounded by a nuclear envelope, made up of a double membrane which controls what enters and leaves the nucleus. The outer membrane of the nucleus is continuous with the membrane of the rough endoplasmic reticulum.
The rough endoplasmic reticulum, also known as rough ER, is a membrane factory for the cell, it grows in place by adding membrane proteins and phospholipids to its own membrane (Campbell, 2015). It plays a major role in the production, processing and transportation of proteins and lipids to other organelles, such as, the Golgi apparatus, plasma membranes etc. The rough ER can also produce insulin and antibodies in certain cells, such as the pancreatic cells and white blood cells (Bailey, 2017). The rough ER is a series of flattened sacs, studded with protein, which is manufactured by ribosomes, these sacs are attached to the cytoplasmic side of the membrane. The rough ER is a network of tightly folded membranes to maximise the
Mitochondria act like a stomach, or digestive system, they take nutrients and create energy molecules for the cell by breaking them down. This also known as cellular respiration. Mitochondria float freely throughout the cell. Some cells have no mitochondria, whereas some have thousands. Muscle cells, for instance, need lots of energy so, therefore, they have a lot of mitochondria. Mitochondria is shaped perfectly to maximise its productivity. The inner membrane of the mitochondria folds many times over to maximise the surface area inside the organelle and create layered structures called cristae. This structure allows for mitochondria to produce more energy for the