A cell is the lowest level or organisation that can perform all activities required for life and is capable of independent reproduction, unlike a virus which is not a cell because it cannot independently reproduce and requires a host cell to do so.
Both prokaryotes and eukaryotes are types of cell but vary in terms of structure.
A prokaryotic cell is a cell which lacks a defined nucleus, meaning there is a nucleoid which is not bounded by a membrane. Prokaryotes and usually unicellular, but can form larger organisms.
A eukaryotic cell is a cell which contains a defined nucleus. Eukaryotes are usually part of a higher organism such as tissues which include organs, but can also be single celled organisms.
Prokaryotes include bacteria and …show more content…
Within this cytosol most organelles will be found. Some of these organelles are shared by prokaryotes and eukaryotes including ribosomes which are very small and are involved in making proteins.
In both prokaryotes and eukaryotes there may be a structure called a flagellum which is a projection or continuation of the body of the cell and is used for locomotion. In bacteria cells this is usually present and is also present in some animal cells.
Both cells can possess a cell wall which is usually present in prokaryotes and usually chemically complex. If a cell wall is present in eukaryotes then it is usually chemically simple. In bacteria the cell wall is made up of peptidoglycan, while in eukaryotic plant cells it is usually made up of cellulose. Cellulose is chemically simpler than …show more content…
A defined nucleus is one where there genetic material is bounded by a barrier within the cell. In a prokaryote the region where most of the DNA of the cell is located is called the nucleoid which is free floating within the cell. While in a eukaryote most of the DNA of the cell is located in the chromatin which surrounds the nucleolus. The nucleolus is where ribosomes are assembled. The nucleolus and chromatin and then enclosed by the nuclear membrane, these 3 structures are collectively called the nucleus of the cell.
Prokaryotes, particularly bacteria, come mostly in 3 different shapes. Them being rod-shaped, spherical or in a spiral shape. Eukaryotes include all other cells apart from bacteria and archaea. However, the shape of eukaryotes are usually irregular in animal cells and quite regular in plant cells.
Examples of prokaryotic organisms include Escherichia coli which is a bacterium of which a certain strain can cause food poisoning, but also occurs naturally in the lower intestines of animals. Examples of eukaryotes range from single celled organisms such as yeasts and amoebae to large multicellular organisms such as plants and animals.
Overall, a prokaryote is usually defined by what it lacks rather than what it uniquely
Both prokaryotes and eukaryotes are types of cell but vary in terms of structure.
A prokaryotic cell is a cell which lacks a defined nucleus, meaning there is a nucleoid which is not bounded by a membrane. Prokaryotes and usually unicellular, but can form larger organisms.
A eukaryotic cell is a cell which contains a defined nucleus. Eukaryotes are usually part of a higher organism such as tissues which include organs, but can also be single celled organisms.
Prokaryotes include bacteria and …show more content…
Within this cytosol most organelles will be found. Some of these organelles are shared by prokaryotes and eukaryotes including ribosomes which are very small and are involved in making proteins.
In both prokaryotes and eukaryotes there may be a structure called a flagellum which is a projection or continuation of the body of the cell and is used for locomotion. In bacteria cells this is usually present and is also present in some animal cells.
Both cells can possess a cell wall which is usually present in prokaryotes and usually chemically complex. If a cell wall is present in eukaryotes then it is usually chemically simple. In bacteria the cell wall is made up of peptidoglycan, while in eukaryotic plant cells it is usually made up of cellulose. Cellulose is chemically simpler than …show more content…
A defined nucleus is one where there genetic material is bounded by a barrier within the cell. In a prokaryote the region where most of the DNA of the cell is located is called the nucleoid which is free floating within the cell. While in a eukaryote most of the DNA of the cell is located in the chromatin which surrounds the nucleolus. The nucleolus is where ribosomes are assembled. The nucleolus and chromatin and then enclosed by the nuclear membrane, these 3 structures are collectively called the nucleus of the cell.
Prokaryotes, particularly bacteria, come mostly in 3 different shapes. Them being rod-shaped, spherical or in a spiral shape. Eukaryotes include all other cells apart from bacteria and archaea. However, the shape of eukaryotes are usually irregular in animal cells and quite regular in plant cells.
Examples of prokaryotic organisms include Escherichia coli which is a bacterium of which a certain strain can cause food poisoning, but also occurs naturally in the lower intestines of animals. Examples of eukaryotes range from single celled organisms such as yeasts and amoebae to large multicellular organisms such as plants and animals.
Overall, a prokaryote is usually defined by what it lacks rather than what it uniquely