The first bacteria cell description was first describe by Antony van Leeuwenhoek in a letter wrote to the Royal Society of London on September 17, 1683.
''a little white matter, which is as thick as if 'twere batter." He repeated these observations on two ladies (probably his own wife and daughter), and on two old men who had never cleaned their teeth in their lives. Looking at these samples with his microscope, Leeuwenhoek reported how in his own mouth: "I then most always saw, with great wonder, that in the said matter there were many very little living animalcules, very prettily a-moving. The biggest sort. . . had a very strong and swift motion, and shot through the water (or spittle) like a pike does through the water. The second sort. . . oft-times spun round like a top. . . and these were far more in number." In the mouth of one of the old men, Leeuwenhoek found "an unbelievably great company of living animalcules, a-swimming more nimbly than any I had ever seen up to this time. The biggest sort. . . bent their body into curves in going forwards. . . Moreover, the other animalcules were in such enormous numbers, that all the water. . . seemed to be alive." These were among the first observations on living bacteria ever recorded.''
In reality, many people in earlier time could have seen bacteria as a biofilm like cyanobacterial blooms without knowing what it was...
But the first single bacterium cell seen and repertoried was on September 17, 1683 by Antony van Leeuwenhoek, the father of the microscopy.
Earliest life form is microbe, a unicellular organism. First bacteria can dated back to 3.4 billion year ago. Emergance and true cut point from being a replicating molecules to a living cells is still unknown.
Human cells can widely vary in form and function, even in a single human, because of the multicellular structure. Bacteria, on the other hand, are single-celled, and as such every cell is mostly the same.
Absolutely no! As a general rule, Gram-neg bacteria need more water than Gram-pos bacteria (~97% water activity is an absolute minimum for almost all Gram-negs) as Gram-pos bacteria are typically more tolerant to high salt/sugar conditions and desiccation, so can generally cope with less water...but all bacterial vegetative cells need at least 90-93% water content to survive, let alone reproduce. Bacterial spores are a different circumstance and can survive desiccation - however, spores cannot reproduce without converting back to vegetative cells first. As for 'coolness', bacteria are incredible entities that can inhabit pretty much any environmental niche on the planet ranging from polar ice caps to the hottest thermal vents. It depends on the bacterium which niche they can survive and reproduce in i.e. some bacteria love growing and multiplying at 4oC (think bacteria that commonly spoil milk), others at 110oC. If you're interested in learning more about this topic, you might benefit from reading some first-year microbiology textbooks.
hello im in year 7 and i dont even know if this will update (its my first time using this) and i am having a science exam and this is what i learned but please reply or tell me if this was useful, thank you! :)Monera are usually very tiny, although one type, namely the blue-green bacteria, look like algae. No visible structure inside the cells. They absorb nutrients.Protista these organisms are made up of single or multiple cells. (but im still not that sure)Plantae, mostly don't move, they are plants.Fungi, small bacteria, from size to mushrooms.Animalia are animals, who eat, breed and live.
Still in debate, so no correct answer for this question now. Could be certain bacteria which incorporated other bacteria into their own cells (leading explaination to eukaryotic evolution and mitochondria), in an evolutionary goal to be more efficient.
what year did leewenhoek discover bacteria
Cyber Monday first appeared this year, if you were listening to the news you would know it arrived because of Black Friday, which appeared in Canada for the first time this year.
From the origin of the earth until the first eukaryotic cells appeared (4.6 billion year ago until 2.5 billion years ago) was called the Archaean Eon.
Single cell organisms date back to approximately 3.5-3.8 billion years old. These are bacteria and archaea.
It was first discovered accdiently prof.-AjaY- in their labortry
1964
The cast of The First Year - 1976 includes: Fred Davis
The ozone hole first appeared in the year 1985.
No. The character first appeared in the original play in 1904. She first appeared in a movie in 1924. 1953 was the year she appeared in Disney's adaptation of the play.
1972
The first Mac appeared in 1984.
C++ first appeared in 1983.