Tag: classification of microbes

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Questions Related to classification of microbes

Multiple choice biology diseases and immunity pathogen and their mode of transmission classification of microbes infectious diseases

How soon do symptoms typically appear after a person is infected with the rabies virus?

  1. 48 hours

  2. 1 week

  3. 1 month

  4. 1 year
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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.

Multiple choice biology diseases and immunity pathogen and their mode of transmission classification of microbes infectious diseases

Which of the following statements about rabies in people is false?

  1. Rabies virus targets the brain and spinal cord

  2. Rabies is almost always fatal once symptoms appear

  3. Rabies symptoms will almost always appear within a few days

  4. Rabies can lead to organ failure, coma and death
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

Multiple choice biology diseases and immunity pathogen and their mode of transmission classification of microbes infectious diseases

What can you do to prevent getting rabies?

  1. Have your pets and other domesticated animals regularly vaccinated against rabies.

  2. Keep your dog on a leash when you take it outside your yard.

  3. Don't approach wild animals.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice biology diseases and immunity pathogen and their mode of transmission classification of microbes infectious diseases

Rabies is caused by

  1. Bacteria and it affects the nervous system

  2. Virus and it affects the cardiovascular system

  3. Virus and it affects the nervous system

  4. Bacteria and it affects the cardiovascular system
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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.

So the correct option is 'virus and it affects the nervous system'.

Multiple choice botany the living world archaebacteria the three domains of life classification of microbes

Organisms called methanogens are most abundant in a

  1. Hot spring

  2. Sulphur rock

  3. Cattle yard

  4. Polluted stream
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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. 

Thus, the correct answer is option C. 

Multiple choice botany the living world archaebacteria the three domains of life classification of microbes

Archaebacteria and eubacteria have been included under the kingdom

  1. Monera

  2. Plantae

  3. Fungi

  4. Protista

  5. Animalia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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.

Thus, the correct answer is 'Monera.'

Multiple choice botany the living world archaebacteria the three domains of life classification of microbes

Archarbacteria with purple coloured pigment in cell membrane :

  1. Can survive in extreme saline conditions.

  2. Are chemoautotrophs

  3. Can use light energy to synthesize ATP

  4. Both (A) and (C)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice botany the living world archaebacteria the three domains of life classification of microbes

Archaebacteria that flourish in temperature above $100^0C $ have special ______ molecules that do not coagulate at high temperatures and remain functional. 

  1. carbohydrate

  2. ester

  3. protein

  4. fat
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Archaebacteria that flourish in temperature above 100 degree C have special protein molecules that do not coagulate at high temperatures and remain functional.
So, the correct answer is 'protein' 
Multiple choice botany the living world archaebacteria the three domains of life classification of microbes

Study the following statements and select the correct ones.
(i) Methanogens are archaebacteria which produce methane in marshy areas.
(ii) Nostoc is a filamentous blue green alga which fixes atmospheric nitrogen.
(iii) Many members of the genus Glomus form mycorrhiza.

  1. (i) and (ii)

  2. (i) and (iii)

  3. (ii) and (iii)

  4. (i), (ii) and (iii)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Methanogens are archaebacteria which produce methane in marshy areas. Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen. Many members of the genus Glomus form endomycorrhiza.
So, the correct option is '(i), (ii) and (iii)'