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My science assignment on Bacteria.

Faradeeb Ahan

on 24 September 2012

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Transcript of Bacteria

Faradeeb Ahan
Tashfia Sharar
Tasfiqul Alam History of Bacteria Here is a picture of Antonie van Leeuwenhoek, the man who discovered an entire kingdom. It all started in 1676, when one Antonie van Leeuwenhoek used his singular lens microscope to look into what he thought were animalcules. It’s weird how something he just though were there turned about to be way more than important. Bacteria is now one of the six kingdoms of living things. 'Bacteria' Origin and Early Life Bacteria can be traced back to 4 billion years ago, it is said that for 3 billion years bacteria is the organism that dominated earth, since all of the living things were microscopic. Growth and Reproduction Imagine us being smaller than them in the picture, when they are magnified almost 10000 times. The way bacteria reproduces, is completely opposite to us. Our reproduction system includes a male and a female, while theirs only include one species. Their genes passes on
to his offspring, who is an exact copy of the parent. As you can see in the diagram
they only divide into two. GENETICS Genetics is the study devoted to bacteria, fungi and
other singular-celled objects. Though its different from Ekaryotic Genetics, but still is different. Bacterial Genetics
have helped a lot in Animal Genetics. Interaction with Other Organisms Here in the picture is Gregor Mendel
discoverer of New Genetics. There are three ways bacteria interacts with other organisms: Commensalism: Where the bacteria benefits
without, harming the other organism. Mutualism: Where the bacteria and the other organism benefits. Parasitism: Where the bacteria benefits while the other organism suffers. Cellular Structure Intracellular Structure: The bacterial cell is surrounded by a
lipid or a cell membrane, which covers the cells like a shield,
to keep its nutrients and other essentials.

Extracellular Structure: Bacteria mostly has its cell wall
outside of its cytoplasmic membrane. That means, they are different from plants and fungi. These cell walls are important
for bacteria life to survive. Behaviors of Bacteria: Secretion
Bacteria usually like to present themselves with chemicals. The bring chemicals to the land around them, around and surround themselves with it.

This is the sort of chemical a bacteria might have, too help it produce light.

There are loads of ways bacteria can move, they can swim, glide, move across surface, but each of this process are for separate species.

Bacteria cell often work really together their, use inter-cell communication to communicate and engage in co-ordinated multicellular behavior. Bacteria has had a significant amount of impact in the world of science and technology. Bacteria such as yeast and mold, has been used for over thousands for years by people in cooking. They have been used in waste processing and many other industry based work, mostly cleanup work which includes oil spills. They are even used as pesticides at times, when other options are too expensive. They are even used in medicines of all kinds. Significance in Technology and Industry Morphology Morphology is the types and diversities you can get in Bacteria’s. They come in different shapes and size from 0.3 micrometers to 0.5 millimeters. Most bacteria are either spherical or rod shaped. Recently even star-shaped bacteria were discovered. Thank you all for watching.

Hope you all liked it.

Please ask questions now if you have any.
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