Eukaryotic Cells

All mammalian cells are eukaryotic, and whilst the eukaryotic type of cell is not exclusive to mammals, mammalian cells differ from other eukaryotic cells because of the organelles that are or are not present. For instance some plant cells have chloroplasts which are not present in mammalian cells, but both plant cells and mammalian cells are eukaryotic in nature. The term eukaryotic refers to the cell having specific membrane bound organelles, which are not present in prokaryotic cells. The defining feature of a eukaryotic cell is usually its membrane bound nucleus (the exception being the red blood cell) [1].

There are three differences between prokaryotic and eukaryotic cells. They include membrane-bound organelles, presence of a nucleus, and being multicellular or unicellular.

Prokaryotic cells do not have a nucleus. The chromosomes which are found in prokaryotes are usually spread in the cytoplasm. In eukaryotic cells the chromosomes remain together inside the nucleus and there is a clear nuclear membrane that is surrounding the nucleus.

Nearly all animal cells have a nucleus, with the only exception being the red blood cell. The nucleus has two major functions, which are housing the DNA and controlling the cell’s activities. In the centre of the nucleus is the nucleolus. This doesn’t have a membrane, but holds itself together. In the nucleolus, ribosomes are created through the mixture of RNA and proteins. These proteins are originally found in the cytoplasm, outside the nucleus, but they travel through the pores in the nuclear envelope, through the chromatin and into the nucleolus. The structure of the nucleolus allows easy

Bacterial cells and eukaryotes both have a cell wall. The cell wall is what gives the cells its unique shape and size. The cell wall in bacterial cells are made up of carbohydrates, proteins and peptidoglycan. The cell wall in bacteria protects the cell from damages to the cell and has a inelastic shape just outside the plasma membrane. The cell wall of

Prokaryotic cells do not contain nuclei. Instead of having a nucleus to carry the DNA, these cells contain plasmids with circular DNA, as well as having most of the DNA float freely inside the cytoplasm. The plasmids carry the information necessary to keep the cell alive. For example including genes that make the bacteria cell resistant to antibiotics.

There is also the primary wall, it consist of a rigid skeleton of cellulose micro fibrils embedded in a gel-like Matrix. The secondary wall is formed after cell enlargement is completed. It provides compression strength. The plant cell wall function is to provide extra protection to the plant ability to survive among neighboring plant cells. The plasmodesmata biological relevance is that it provide bridges between cells providing close communication through the

Eukaryotes do not have a cell wall. Prokaryotes lack a nucleus. Eukaryotes have a nucleus. Nucleoid area is present in Prokaryotes. Mitochondria are present in Eukaryotes.

Within prokaryotes and eukaryotes there are various similarities, but also differences. First, prokaryotes are cells without a true nucleus. Instead they have a nucleoid that houses their DNA. Eukaryotes on the other hand are cells with a nucleus and a nuclear membrane. Along with the nuclear membrane, eukaryotes also have membrane bound organelles. These organelles allow for complex compartmentalization. Prokaryotes have no membrane bound organelles, which causes them to be simplistic and lack internal compartmentalization. Prokaryotes and eukaryotes both have a cell wall that determines their shape and protects the cell. However, the cell walls differ in structure. Eukaryotes do not have peptidoglycan in their cell wall, whereas some prokaryotes

Cells can be traced back to the basic structure of life. Cells make up all organisms such as, plants, the human body and fungi. There are different types of cells. The thing that differentiates Eukaryotic cells, which are animal and plant cells from Prokaryotic cells is the membranous organelles that are in the cytoplasm and chromosome proteins. The Eukaryotic cell nucleus contains most of the genetic material and controls all activity. mRNA translation happens in the ribosomes which carries out protein synthesis of the cell, while DNA replication occurs at the nucleus. Ribosomes are critical for protein assembly which is important for cellular functions. Also, there is endoplasmic reticulum, it has 2 type: rough and smooth. Smooth endoplasmic reticulum is responsible for metabolic processes and lipid synthesis.

Both of them are composed of cells, which are surrounded by a cell membrane and cytoplasm. Both have flagella. Prokaryotes have protein building blocks, while Eukaryotes has multiple microtubules. Both have cell wall. On Prokaryotes it includes peptidoglycan and is chemically complex while in eukaryotes it is chemically simple. The DNA in prokaryotes exists in a space called nucleoid and it is circular DNA while eukaryotes have linear DNA and it is organized into a higher-order structure. Both have ribosomes that are used for translation of RNA into proteins. Both of them can perform transport, DNA replication, transcription, translation, and movement. Although, they have similarities, most are carried out within organelles in eukaryotes.

Adversely, in eukaryotes the former takes place in the nucleus and the latter in the cytoplasm. These factors strongly convey the simplicity of a prokaryotic cell, which do not require as many genes to operate compared to that of a eukaryotic

In regards to their basic structure, according to the SEER Training website, “cells consist of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm.” (Training.seer.cancer.gov, 2017) This is true for animal cells however plant cells contain a fourth part which is known as the cell wall, it is located on the outside of the cell membrane and allows the cell to keep its rigid shape. It should also be known that there are types of cells that do not contain a nucleus, these are called prokaryotic cells and generally still have the same characteristics as cells that do have a nucleus which are known as eukaryotic cells. (Study.com, 2017) As seen in Figure 1 cells also contain organelles which keep the cell alive and allow it to function effectively.The cytoplasm of the cell which resides between the cell membrane and the nucleus is a gel-like liquid filling the inside of the cell. The cytoplasm allows the cell to have shape and allows the cell 's organelles to move around the cell as needed and function correctly. The nucleus is widely considered to be the control center or

Eukaryotic cells have structural advantages over Prokaryotic cells, due to the presence of specific internal organelles, such as a nucleus; where DNA (Deoxyribonucleic Acid) and genetic codes are found, as well as the presence of other organelles which are bigger in eukaryotes, such as mitochondria. Also, eukaryotes can be considered structurally advanced as its organelles are enclosed by a membrane, making it larger in size and stronger compared to a prokaryote. Both prokaryotes and eukaryotes have the ability of movement, but the eukaryotes is more complex. Although, the eukaryotic cell is more structurally advanced to that of a prokaryotic cell, prokaryotes are simple in nature but are capable of performing the same processes to that of

The main differences between Animal and Plant cells are: Plant cells have a cell Wall, Chloroplast (gives plants its greenness), and a Large Vacuole containing sap. Other than these differences the 2 ultrastructure’s are very similar.