Tag: classification of microbes

Explanation: Symptoms usually appear 30 to 90 days after exposure. Depending on the severity of the bite and the place on the body that was bitten, symptoms may appear more quickly. In rare cases, however, a person may not develop symptoms until a year or more after exposure.

Explanation: In humans it may take from as early as two weeks to as late as one year after exposure for symptoms to appear.

Explanation: Since The rabies virus is transmitted to others through the saliva of the infected animal, dont touch a dead animal; make sure your home is sealed to prevent wild animals from slipping into a basement, porch or attic; report any animals that are acting strangely to your local animal control department to prevent getting rabies.

Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. Early symptoms can include fever and tingling at the site of exposure. These symptoms are followed by one or more of the following symptoms: violent movements, uncontrolled excitement, fear of water, an inability to move parts of the body, confusion, and loss of consciousness. Once symptoms appear, the result is nearly always death. The time period between contracting the disease and the start of symptoms is usually one to three months, but can vary from less than one week to more than one year. The time depends on the distance the virus must travel along peripheral nerves to reach the central nervous system.

Methanogens are the primitive bacteria belonging to archaea which are able to produce methane through the process of methanogenesis. These organisms can utilise the carbon dioxide and hydrogen gas to form methane. These organisms are found in marshy areas where they produce the marsh gas, in swamps and in the stomach of cattle. The methane is released along with the other wastes by the cattle and so, methane is found abundantly in the cattle yard. 

Monera is a kingdom that includes prokaryotic unicellular organisms. It includes bacteria, Eubacteria, Archaebacteria, Cyanobacteria. They lack membrane-bound organelles. They also lack true nucleus. Instead, they have nucleoid, genetic material without nuclear envelope.

Answer is option D i.e. "Both (A) and (C)"
Archarbacteria are salt loving bacteria that can live in strong salt solutions. Hence they are also called halophiles. In presence of strong sunlight they develop a purple colored pigmented membrane to utilize light energy producing ATP.