Archaea

For a long term, the prevailing logic in global microbial diversity has been “everything is everywhere, but nature selects”, coming from Baas Becking’s 1934 publication, “Geobiologie of inleiding tot de milieukunde” (Baas Becking, 1934). This conclusion was based on the presumption that physical, chemical, and geographical barriers play no role in the global dispersal of microbes, which aerosolise for easy distribution. In this scenario, it would be expected that any given species of microbe…

bacterial cells, Archaea are single celled microorganisms that are similar to bacteria in size and simplicity of structure but more closely related to Eukaryotes when it comes to molecular organization. They are believed to have evolved before Eukarya and after Bacteria which can be proved by microfossils traces, biomarkers, and more. Archaea at first seemed very similar to Bacteria, and many were categorized as such. Only later was the new domain Archaea suggested. Just like Eukaryotes,…

Section Two Assignment 1. Timeline of the evolution of cells. • 4.6 Billion years ago: The formation of Earth is believed to have transpired around 4.6 billion years ago. • 3.5 Billion years ago: Ancient fossils from around this time period provided evidence of a bacteria-like organisms known as Prokaryotes. This ancient cell was first founded in the 1970’s in among fossilized rocks from Australia and contain no nucleus. • 2 Billion years ago: A more complex prokaryote arises with a skeleton…

TOPIC: ECONOMIC IMPORTANCE OF FUNGI Before we discuss the economic importance of fungi let us have a brief study about what fungi really are. Fungi are multicellular, eukaryotic, non-chlorophyllous, living organisms which feed heterotrophically by absorption and have a cell wall made up of fungal cellulose and have a body made up of hyphae called mycelium. In this universe each and everything has its own economic advantages and disadvantages. Let us first study the advantages of fungi…

The purpose of this report is to investigate the following observations; Euglena is a unicellular organism in the kingdom of Protista, the cells are both autotrophic and heterotrophic which means if there is no food source but there is a light source they will fall on their autotroph tendencies through photosynthesis while if there is a food source but no true light source they will fall on their heterotroph tendencies. Euglenas show positive photo-taxis due to their ability to preform…

Recent research suggests that the size of the waist depends to a certain extent on bacteria that inhabit the intestine. How is it possible? In a study involving 900 Dutch adults, it was found that some intestinal bacteria could help determine not only body fat levels, but also blood concentrations of HDL (good) cholesterol and triglycerides. A close relationship! This is the first study to offer "solid evidence" linking intestinal bacteria with cholesterol and triglyceride levels,…

• Bacteria, are single-cell microorganism with no nucleus that had a sphere, rod, and spiral shape and branching threads. Ranges in diameter between (0.5- 1) µm and in length between (2-4) µm however, they are either a parasite or live independently they are found in all living things and in all environments. Some bacteria in drinking water can cause disease such as salmonella, total coliform (including fecal coliform and E.coli), Shigella, Legionella, and Campylobacter and “their presence…

There are two main types’ of cells. These are prokaryotic (see diagram 1) and Eukaryotic. ( See diagram 2). Prokaryotic cells are the cells of microorganisms such as Bacteria and Achaea. Eukaryotic cells are basically cells that make all other living things such as humans and animals. You can identify the difference between these cells by their structure they both have a number of features in common but all so lots of differences. The eukaryotic cell has a membrane enclosed organelle called…

Characteristics can classify organisms into 5 key groups called the 5 kingdoms: - Protoctista: These are mainly unicellular organisms that also have a nucleus. Some examples of protoctista are paramecium, amoeba and unicellular algae. -Prokaryotes: These are also unicellular organisms like protoctista but unlike them, they do not have a nucleus. An example of a Prokaryote is bacteria. Some prokaryotes are able to make their own food which makes them more self-sufficient. These types of…

Bacteria are single celled organisms which thrive in a wide range of environments. For example they can live in soil, the ocean and the human and animal gastrointestinal tract. Bacteria are also able to live in extreme environments such as the harsh cold and some deserts. Bacteria can be harmful, resulting in serious health issues such as pneumonia. (Bacteria, n.d.)However they can also be very beneficial. Certain bacteria aid in digestion and other processes in the human body. There are two…