In this textbook the focus will be on the bacteria and archaea (traditionally known as the “prokaryotes,”) and the viruses and other acellular agents.

This Science NetLinks lesson focuses on the bacterial disease known as Anthrax. Anthrax has always been identified as a disease that infects cattle, but there are known cases of people contracting this disease directly from handling infected cattle. In this online lesson the students will research the disease and its impact on human health.

The pork chops you buy in the supermarket neatly packaged in plastic and styrofoam may look completely sterile, but are, in fact, likely to be contaminated with disease-causing bacteria - and not with just any old bugs, but with hard-to-treat, antibiotic resistant strains. In a recently published study, researchers with the National Antimicrobial Resistance Monitoring System bought meat from a wide sampling of chain grocery stores across the country and analyzed the bacteria on the meat. Resistant microbes were found in 81% of ground turkey samples, 69% of pork chops, 55% of ground beef samples, and 39% of chicken parts.

In the explorable explanation players can learn how antibiotic resistance happens. They can interact with bacteria in this simulation to learn how when living things reproduce, there is a small amount of variance in their offspring. This allows organisms to respond to changes in their environment over several generations. Applied to bacteria, when they treated with antibiotics, only the strongest survive and multiply, creating an increasing resilient population.

Students are introduced to the concept of engineering biological organisms and studying their growth to be able to identify periods of fast and slow growth. They learn that bacteria are found everywhere, including on the surfaces of our hands. Student groups study three different conditions under which bacteria are found and compare the growth of the individual bacteria from each source. In addition to monitoring the quantity of bacteria from differ conditions, they record the growth of bacteria over time, which is an excellent tool to study binary fission and the reproduction of unicellular organisms.

On August 7, 1996, a chunk of rock made front-page news. It was a meteorite from Mars that was believed to contain fossils of one-celled life forms. Although that particular claim is still the subject of much debate, scientists are still intrigued by the possibility that microbes from Mars may have once seeded the Earth. In this Science Update, you'll hear about an unusual experiment that could help provide the answer.

In this new video we look at the basics of bacteria. We look at their classifications, sizes, shapes and how they reproduce. This video is intended to be a primer on bacteria. We will go into more details as we progress in this series.
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Yogurt is the byproduct of hungry bacteria that digest the lactose in milk. You can make more yogurt just by feeding the bacteria more milk.

In this inquiry activity, students generate investigable questions to explore the link between hygiene/cleanliness and bacteria growth/population. The students will present their conclusions, and video clips containing additional information will be discussed.

This lesson explores both math and science concepts as it scaffolds up from student observations of patterns to exponential function notation.

Try your hand at assembling the following bacteria jigsaw puzzle created with a Streptococcus image from CELLS alive! This puzzle is 32 pieces and generally takes a few minutes to solve.

Students construct paper recombinant plasmids to simulate the methods genetic engineers use to create modified bacteria. They learn what role enzymes, DNA and genes play in the modification of organisms. For the particular model they work on, they isolate a mammal insulin gene and combine it with a bacteria's gene sequence (plasmid DNA) for production of the protein insulin.

In this presentation, we talk about adaptation and evolution of bacteria. Furthermore, we will discuss how you can work with or against evolution, regarding the treatment of bacteria and biofilms.

This presentation introduces bacteria and biofilms. Where do we find bacteria? Is it possible to live without bacteria? Should we be scared of bacteria?

In this presentation, we will talk about diagnosis of bacteria and chronic infections in clinical practices. We will discuss why we need to diagnose bacteria in infections and what the biggest challenges are in diagnosing bacterial and chronic infections. Finally, we will discuss what the future will bring, regarding bacteria and diagnosis.

In this presentation, we will talk about bacteria, and the two life forms planktonic and biofilm growing bacteria. In continuation of this we will explain the difference between planktonic and biofilm growing bacteria.

The aim of this presentation is to expand the student knowledge about skin microbiology. The main skin microbes are bacteria, viruses and fungi, which normally are friendly without causing harms. However, the skin flora is constantly challenges by our every-day life activities.

Bacteria get a bad rap for causing disease, but many of these organisms are beneficial. Without them, we wouldn't be able to digest our food, and garbage would never decompose. Now, one group of scientists has found another way to put bacteria to work. They have developed a fuel cell that can convert organic material into electricity.