CELL

The cell is the simplest form of living organisms and that what makes up the human body.

There are many types of cells but today I will only speak about the cell.

Animal and plant cell are both eukaryotic cells. 

animal and plant cell 

Not all animal cell has all of these organelles (small components that inside of the cell which carries out different activities and reaction aiming to help the cell to grow).

Animal cell and Plant cell organelles: 

Cell membrane: controls what enters and leaves the cell, depending on the type of molecule or ion, each one has its own way of entering and leaving the cell. For an example, ions leave and enter the cell through channels. 

Cytoplasm: where all of the organelles are contained in a gel-like structure. Contains around 70-80% water.

Nucleus: where the DNA found. It’s surrounded by nuclear envelope to protect the DNA from any foreign bodies or harm but with the nuclear envelope, the RNA can leave the nucleus. Chromatin is a term used in chromosome description when it’s condensed. Nucleolus contains the Ribosomal DNA which is needed for the protein codes.

Ribosome : They are in charge of protein synthesis. Sometimes they can be alone floating around in the cytoplasm or either attached to endoplasmic reticulum because some of the protein that they produced might be harmful to the cytoplasm and other organelles thus must be contained in the endoplasmic reticulum.

 Mitochondria: they are the powerhouse of the cell, where ATP production takes place (energy). using glucose, water and oxygen to produce ATP.

Chloroplast : absorbs the light (solar energy) and the glucose that made in the stroma to form ATP by photosynthesis. CO2 used in the process and oxygen made as a waste product.

Endoplasmic reticulum: there are smooth and rough (containing ribosomes). which is important in transporting materials between organelles. 

Golgi apparatus: important in storing, organizing, modifying and exporting any secretory products. 

Peroxisome: increases the breakdown of any toxic or harmful substance.

Centrosome: they are important in cell division to form spindle fibers by radiating microtubules.

Vacuole: They control and maintain a hydrostatic pressure

Cell wall: Providing a support and strength to the plant cells preventing an excess of water intake

Lysosome: break down macromolecules. 

Reference: 

https://bio.libretexts.org/LibreTexts/University_of_California_Davis/BIS_2A%3A_Introductory_Biology_(Easlon)/Readings/02.3%3A_Eukaryotic_Cell%3A_Structure_and_Function

http://ib.bioninja.com.au/standard-level/topic-1-cell-biology/12-ultrastructure-of-cells/organelles.html#previous-photo

http://www.sparknotes.com/biology/cellstructure/celldifferences/section1.rhtml