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Simulations Laboratory in Physics Distance Education
Simulations Laboratory in Physics Distance Education

The Bacterial Chromosome: Structure and Function
The Bacterial Chromosome: Structure and Function

... Phylogenetic analysis indicate that sphericalshaped bacteria arose periodically during evolution from rod-shaped precursors due to a loss of genes: JL Siefert (1998) Microbiol. 144: 2803 ...
Chapter 27- Prokaryotes and the Origin of Metabolism
Chapter 27- Prokaryotes and the Origin of Metabolism

... that produce their own ATP  Led to evolution of glycolysis and generation of ATP by substrate ...
Feasability of Increasing Oxygen Density Through the Applicaiton of
Feasability of Increasing Oxygen Density Through the Applicaiton of

Marine Microbes
Marine Microbes

... Nutrient depletion + viral effects (if any)  bloom breakdown - Bacteria decompose senescing cells  O2 depletion ...
pathogenesis of bacterial infection
pathogenesis of bacterial infection

... Once in the body, bacteria must attach or adhere to host cells, usually epithelial cells. After the bacteria have established a primary site of infection, they multiply and spread. Infection can spread directly through tissues or via the lymphatic system to bloodstream. Bloodstream infection (bacter ...
Magnetic Confinement Demonstration
Magnetic Confinement Demonstration

... 1. Turn on your oscilloscope and adjust until there is a dot on the screen. Horizontal and vertical position knobs can be used to get the dot near the center of the screen. 2. Slowly bring a bar magnet toward the screen holding it horizontally with the north pole toward the dot on the screen, and do ...
Magnetic Confinement Demonstration: Motion of Charged Particles
Magnetic Confinement Demonstration: Motion of Charged Particles

Magnetic Resonance TOPIC 3
Magnetic Resonance TOPIC 3

...  A magnetic field is produced by passing an electric current through the coils.  The electrical resistance of the wire produces heat and limits the maximum magnetic field strength of resistive magnets.  The heat produced is conducted away from the magnet by cooling system. ...
Viruses
Viruses

... The Domain Archaea • Archaea (meaning ancient) were discovered in 1977; they are procaryotic organisms. • Genetically, archaeans are more closely related to eucaryotes than they are to bacteria. • Archaeans vary widely in shape and live in extreme environments, such as extremely acidic, extremely h ...
2.3 Gyromagnetic Ratio - McMaster Physics and Astronomy
2.3 Gyromagnetic Ratio - McMaster Physics and Astronomy

... In general the gyromagnetic ratio has to be calculated for a given configuration or extracted from experiment (but, like many dimensionless quantities in physics the g-factor is typically an order unity number). It is an extremely important quantity that appears in both classical physics, but especi ...
Synthesis and magnetic characterization of Ln(III) complexes with 4
Synthesis and magnetic characterization of Ln(III) complexes with 4

... Table 2 shows a comparison of coordination distances in all five complexes, presented in atomic number order. Distances show the same internal sequence and fall off from left to right, as expected for the well known lanthanide contraction, including the alien Yttrium at the end. The [Ln(crot)3(H2O)(bp ...
The Magnetic Field Attraction and Repulsion
The Magnetic Field Attraction and Repulsion

ppt_ch14
ppt_ch14

... To demagnetize a magnetic material completely, the retentivity BR must be reduced to zero. A practical way to do so is to magnetize and demagnetize the material with a decreasing hysteresis loop. This method of demagnetization is called degaussing. Applications of degaussing include:  Metal electro ...
UNIT 4: Introduction to Bacteriology
UNIT 4: Introduction to Bacteriology

... caused by microbes must follow this sequence. Koch’s rules: 1. Organism must be found in each case. 2. Be able to isolate organism from diseased individual 3. Must reproduce same disease when isolated organism is used on healthy animal. This lead to the study of microorganism by various scholars whi ...
Title of project: Effects of plant extracts on the attachment of
Title of project: Effects of plant extracts on the attachment of

I. Characteristics of Magnets - Otterville R
I. Characteristics of Magnets - Otterville R

magnetism
magnetism

... the case of steady currents) describe the origin and behavior of the fields that govern these forces. Therefore magnetism is seen whenever electrically charged particles are in motion---for example, from movement of electrons in an electric current, or in certain cases from the orbital motion of ele ...
Magnetic properties of materials- I
Magnetic properties of materials- I

... • These dipoles might align when an external electric field is applied. • An electron circulating about the nucleus can be considered as a current loop of radius r and speed v. ...
engineering physics ii semiconducting materials
engineering physics ii semiconducting materials

...  A semiconductor slab of thickness ‘t’ and breadth ‘b’ is taken and current is passed using the battery as shown in figure. ...
SUPERCONDUCTING MATERIALS
SUPERCONDUCTING MATERIALS

... these magnetic fields. The magnetic field in the train is produced by either electromagnets or by an array of permanent magnets The repulsive force in the track is created by an induced magnetic field in wires or other conducting strips in the track. At slow speeds, the current induced in these coil ...
74. Leakage field of the transformer
74. Leakage field of the transformer

... does not argue with the magnetic field strength H, but only with the flux density B. Since B is much greater inside the iron core than outside the impression results that the field outside does not play an essential role. This is only one of many examples which show that the exclusive use of B for t ...
MD0808 1-1 LESSON ASSIGNMENT LESSON 1 Introduction to
MD0808 1-1 LESSON ASSIGNMENT LESSON 1 Introduction to

Характеристика бактерий
Характеристика бактерий

... glycolysis. ...
I Basic Spin Physics
I Basic Spin Physics

< 1 ... 71 72 73 74 75 76 77 78 79 ... 142 >

Magnetotactic bacteria

Magnetotactic bacteria (or MTB) are a polyphyletic group of bacteria discovered by Richard P. Blakemore in 1975, that orient along the magnetic field lines of Earth's magnetic field. To perform this task, these bacteria have organelles called magnetosomes that contain magnetic crystals. The biological phenomenon of microorganisms tending to move in response to the environment's magnetic characteristics is known as magnetotaxis (although this term is misleading in that every other application of the term taxis involves a stimulus-response mechanism). In contrast to the magnetoception of animals, the bacteria contain fixed magnets that force the bacteria into alignment — even dead cells align, just like a compass needle. The alignment is believed to aid these organisms in reaching regions of optimal oxygen concentration.
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