What is a cell?
- A cell is the smallest structural and functional unit of an organism, which is typically microscopic and consist of cytoplasm and a nucleus enclosed in a membrane. Cells can be divided into two main categories – prokaryotes and eukaryotes. Prokaryotes lack a nucleus. Bacteria have a good example and most studied. Eukaryotes possess a nucleus. These include: fungus, plants, animal cells, and some unicellular organisms. It contains organelles where life sustaining activities take place. Organelles are made up of endoplasmic reticulum – nucleus, vacuoles, mitochondria and Golgi apparatus.
The human cell has many different functions: the cell membrane, nucleus, cytoplasm, mitochondria endoplasmic reticulum – smooth and rough, Golgi apparatus and the lysosomes.
The function of the cell membrane is to surround the cytoplasm of any living cell from the outside environment. The cell membrane also has the role of providing shape to a cell and to support the cell. Its function is to protect the inside of the cell by only allowing certain substances into the cell, while keeping unwanted substances away. It is also a base for the cytoskeleton in some organisms.
The function of the nucleus is that it controls all the services in the cell. the nucleus contains DNA which is our genetic structure that we need to make protein.
The function of the cytoplasm is to carry all of the cells structure
The function of the mitochondria is to provide energy to the body.
The function of the smooth endoplasmic reticulum is
The function of the rough endoplasmic reticulum is
The function of the Golgi apparatus is
The function of the lysosomes is
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