A selection of Mechanical calculators: The basic operating principles of mechanical calculators changed little from the end of the 19th century to their obsolescence in the 1970s, though there were many developments in the mechanisms and the materials used.
Post. Share. Bacteriophages are viruses that infect bacteria. A bacteriophage can have a protein tail attached to the capsid (protein coat that envelopes the genetic material), which is used to infect the host bacteria.Scientists have long sought to uncover the structure and function of viruses. bacteriophage can have a protein tail attached to the capsid (protein coat that envelopes the genetic material), which is used to infect the host bacteria.
Question: 7th grade science. Answers: Whooping Cough Gas Gangrene Meningitis Botulism Syphilis Scarlet Fever Epidemic Typhus Cholera Tuberculosis The list goes on. Bacteria that cause disease are called pathogenic bacteria. Bacteria can cause diseases in humans, in other animals, and also in plants.Some bacteria can only make one particular host ill; others cause trouble in a number of hosts, depending on the host specificity of the bacteria.The diseases caused by bacteria are almost as diverse.uestion: 7th grade science. Answers: Whooping Cough Gas Gangrene Meningitis Botulism Syphilis Scarlet Fever Epidemic Typhus Cholera Tuberculosis The list goes on. Bacteria that cause disease are called pathogenic bacteria. Bacteria can cause diseases in humans, in other animals, and also in plants.