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Where do bacteria live, and how long have they been here? How can you tell them apart? What do they do to people and the environment? Answers these and other questions in this overview. Examines the fundamental structure of the bacteria cell, types of bacteria, and their importance to humans and the environment.
One day, microbes will eliminate dirt and garbage, filter exhaust systems, and help make self-cleaning clothing possible. Takes viewers on a global journey-from the U.S. to Iceland, Sweden, India, China, Senegal, and Australia-to meet the world's leading specialists in bacteriology and to discover the incredible abilities of the microscopic life-forms they study. Employs state-of-the-art imaging technology and animation to illustrate how bacteria have learned to adapt to harsh environments and how they can be found in a vast array of human-made products and materials, including medicines, pesticides, plastics, solvents, and even electroacoustic speakers.
Petunia and Pinky introduce viewers to bacteria in this episode. They discuss bacterial structure, reproduction, and how not all bacteria are bad. Other topics covered include endospores, plasmids, and bacteria transformation. Part of "The Amoeba Sisters" series.
Part of the "Branches on the Tree of Life" series. The bacteria section uses compelling microscopy of living bacteria to examine their structure, physiology, behavior, and the vital roles these microbes play in the biosphere.
A MIT student recreates Alexander Fleming's discovery of how bread mold kills bacteria. Fleming accidentally discovered that mold secretes the chemical penicillin, and penicillin is mold's secret weapon against bacteria.
Colony formation on semi-solid medium is basic characteristic of many different bacteria and an important property for microbiologists. These models illustrate the different types of colonies formed, what a colony reflects at the cellular level, how microbiologists obtain isolated colonies, and what happens when cells swarm instead of forming colonies.
The beewolf is a digger wasp that preys on honey bees. A beewolf mother stings a honey bee and deposits an egg on the bee’s paralyzed body. When the beewolf larva hatches, it can feed on the honey bee. Scientists discovered that the beewolf’s antennae are packed with bacteria called Streptomyces, which produce a variety of antibiotic substances. The beewolf spreads the antibiotic-producing bacteria on the cocoon in which the larva develops. In this way, the larva is protected from being infected by harmful bacteria and fungi. Part of the "I Contain Multitudes" series.
How do horseshoe crabs keep humans healthy? They have blue, copper-based blood, which quickly clots in the presence of bacterial toxins. Medical researchers use it to test intravenous drugs, vaccines, and medical devices, ensuring that they are free of bacterial contamination. Part of "The Remarkable Horseshoe Crab" series.
Water is used by everyone, and in the process, a lot of it goes to waste. Whether it goes down drains, sewers, or toilets, much of it ends up at a wastewater treatment plant where it undergoes rigorous cleaning before it flows back to the environment. The process takes time, money and a lot of energy. What if that wastewater could be turned into energy? It almost sounds too good to be true, but environmental engineer Bruce Logan is working on ways to make it happen. With support from the National Science Foundation, Logan and his team at Penn State University are taking the idea a step further. They are developing microbial fuel cells to channel the bacteria's hard work into energy.
Dengue virus, which causes the infectious disease dengue fever, is estimated to infect more than 400 million people every year. It is usually transmitted through mosquitoes. Scientists working to eradicate the disease have discovered that dengue virus is not able to replicate in mosquitoes infected with a bacteria called Wolbachia. The researchers developed a plan to release infected mosquitoes into the wild so that Wolbachia can spread throughout the mosquito population. Part of the "I Contain Multitudes" series.
Most bacteria grown by fission, one cell dividing into two. When nutrients are abundant, this can result in exponential growth, with a large increase in the number of cells over a surprisingly short period of time. Bacterial cell division and the characteristics of exponential growth are illustrated with four, 3D printable models
The most common bacterial shapes are rods, cocci (round), spirals and filaments. Groups of these cells can be differently arranged in space. Four 3D-printable models illustrate these shapes and arrangements.
Outlines the characteristics, shapes, and structures of viruses and monerans, more commonly called bacteria. Notes ways that both affect our lives.
Climb aboard the Cyclops, a microscopic research vessel, and investigate an amazing hidden world on which all living things depend. The Cyclops houses a team of scientists known as the Micronauts and guides them through their discoveries of biological classification, diversity, and ecology. In this episode, the Cyclops crashes into the bottom of the pond and discovers an ooze populated by bacteria. After gathering some, the Micronauts begin to investigate the chemical method the bacteria uses to decompose organic material. In the end, the bacterial also helps the crew escape the bottom of the pond so they can continue to explore. Part 5 of the Microscopic Monsters Series.
Stomach ulcers affect nearly four million American's every year. So, what causes them, and how are they treated? With funding from the National Science Foundation, researchers at Boston University are uncovering the mysteries of how H. pylori bacteria is able to survive and thrive in the acidic world of the human stomach.
Updates the five kingdoms classification scheme with the latest understanding of life's organization based on DNA, fossil, and biochemical evidence, reorganizing all life into three great branches: Archaea, Bacteria, and Eucarya. Shows concise animations and superb microscope footage of primitive cells.
The immune system has a tough job keeping human bodies free of harmful microbes. Humans come in contact with germs and bacteria every day, and the immune system is challenged to protect the body. Explores how the human body goes to battle against germs in order to keep people healthy and how sometimes the immune system requires assistance.
This episode features a new device that is designed to safely capture and release soft-bodied creatures for scientific studies, and a group of scientists at Stanford have discovered that some bacteria are protected by a coating similar to armor. Also in this episode, researchers are working to engineer bacteria that create fertilizer out of air. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
In 1928, a physician named Alexander Fleming observed that a mold in one of his Petri dishes was killing the bacteria he was trying to grow. This strain of mold led to one of the most significant medical discoveries in history: the antibiotic penicillin. Antibiotics soon became lifesavers. However, even back then, Fleming knew that bacteria could become resistant to penicillin. This video describes how widespread use of antibiotics in medicine, agriculture, and household products can lead to the evolution of microbes that are resistant to multiple antibiotics. Part of the "I Contain Multitudes" series.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
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