Studies have shown that eukaryotic cells have existed and evolved from unicellular organisms that are prokaryotes. This occurred through different mutations, which is known as natural selection. Both eukaryotes and prokaryotes are living organisms and are a type of cell. Both types of cells have chemical instructions, can regulate their inter conditions to fit the surroundings, changes in both these types of cells are observed in their characteristics over the years. Living organisms have evolved into three large domains: Archea, Bacteria and eukarya. Bacteria and Archea are simple, small cells they have cell wall and a cell membrane that they are surrounded by, they do not contain a nucleus but a circular strand of DNA that contains genes.
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It includes botany and zoology and all their subdivisions. All living things are made up of cells. Most organisms consists of only one cell and are invisible to the naked eye. However, multicellular organisms are composed of many cells.
Prokaryotes and eukaryotic cells have various strong structural differences between them. A eukaryotic cell contains membrane- bound organelles, including a nucleus. The DNA in a prokaryote does not contain a membrane bound organelle which allows it to be free it also does not contain a nucleus, because of the eukaryotic cells origin scientists believe that is the reason as to why they have membrane bound organelles.
The logical explanation to how eukaryotic cells came into existence seems to be the endosymbiosis theory. Lynn Margulis introduced the theory in the 1960s. This theory proposes that because of the chemical spewing that occurred from the vents underwater it had solidifies forming towers. This in-turn made the perfect conditions for the first cell to be formed. The cells that were formed are said to have been photosynthesising bacteria. The evidence of such organisms is a fossilised …show more content…
They have a double membrane structure the outer membrane defines the external shape of the mitochondrion. The inner membrane has many folds and cristae. The volume between the inner and outer membranes is the intermembrane space. The volume enclosed by the inner membrane is called the matrix of the mitochondrion. The function of the mitochondria is the production of ATP.
Chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis. Chloroplasts are approximately 4to6 micrometers in diameter and shaped like a satellite dish. A chloroplast is enclosed by two membranes, which together are termed the ‘envelope’. Inside are two distinct features: a complex organisation of folded and inter connecting membranes, called thylakoids and a protein- rich fluid region called the stroma. The proteins and pigments involved in the light reactions of photosynthesis are allocated on the thylakoid
It includes botany and zoology and all their subdivisions. All living things are made up of cells. Most organisms consists of only one cell and are invisible to the naked eye. However, multicellular organisms are composed of many cells.
Prokaryotes and eukaryotic cells have various strong structural differences between them. A eukaryotic cell contains membrane- bound organelles, including a nucleus. The DNA in a prokaryote does not contain a membrane bound organelle which allows it to be free it also does not contain a nucleus, because of the eukaryotic cells origin scientists believe that is the reason as to why they have membrane bound organelles.
The logical explanation to how eukaryotic cells came into existence seems to be the endosymbiosis theory. Lynn Margulis introduced the theory in the 1960s. This theory proposes that because of the chemical spewing that occurred from the vents underwater it had solidifies forming towers. This in-turn made the perfect conditions for the first cell to be formed. The cells that were formed are said to have been photosynthesising bacteria. The evidence of such organisms is a fossilised …show more content…
They have a double membrane structure the outer membrane defines the external shape of the mitochondrion. The inner membrane has many folds and cristae. The volume between the inner and outer membranes is the intermembrane space. The volume enclosed by the inner membrane is called the matrix of the mitochondrion. The function of the mitochondria is the production of ATP.
Chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis. Chloroplasts are approximately 4to6 micrometers in diameter and shaped like a satellite dish. A chloroplast is enclosed by two membranes, which together are termed the ‘envelope’. Inside are two distinct features: a complex organisation of folded and inter connecting membranes, called thylakoids and a protein- rich fluid region called the stroma. The proteins and pigments involved in the light reactions of photosynthesis are allocated on the thylakoid