Tag: pathogen and their mode of transmission

Questions Related to pathogen and their mode of transmission

Consider the following criteria.
a. Cell type
b. Level of organization
c. Mode of reproduction
d. Mode of nutrition.
The criteria which formed the basis of the five-kingdom classification include.
biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. $1, 2$ and $3$

  2. $2, 3$ and $4$

  3. $1, 2$ and $4$

  4. $1, 3$ and $4$

Show answer
Correct Option: A


Cells of many protistans, plants, and fungi, but not animals, commonly have

biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. cell wall

  2. ribosomes

  3. plasma membrane

  4. mitochondria

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Correct Option: A
Explanation:

(A) The cell wall is a structural layer around types of the cell outside the cell membrane which provides the cell with structural support and protection found in algae, fungi, plants, bacteria and archaea.

(B) Ribosomes are minute particles with associated proteins and RNA to synthesise proteins and it can be found floating in the cytoplasm or attached to the endoplasmic reticulum.
(C) Plasma membrane surrounds the cell wall, which is composed of a phospholipid bilayer arranged back to back and covered in cholesterol and protein molecule.
(D) Mitochondria are rod-shaped organelles, considered the power generators of the cell which converts nutrients and oxygen into ATP. They are not present in bacteria.
Hence, the correct answer is 'cell wall'

Artificial systems of classification were based on

biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. Vegetative characters

  2. Androecium structure

  3. All of these

  4. None of these

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Correct Option: C
Explanation:

Artificial systems of classification were based on morphological characters such as habit, habitat, colour, number and shape of leaves. They were mainly based on vegetative characters or on the androecium structure.

So, the correct answer is 'All of these'.

In Whittaker's five kingdom system of classification, eukaryotes are distributed among

biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. two kingdoms

  2. three kingdoms

  3. four kingdoms

  4. all the five kingdoms

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Correct Option: C
Explanation:

R.H. Whittaker proposed a Five Kingdom Classification. The kingdoms defined by him were named Monera, Protista, Fungi, Plantae, and Animalia. Among five kingdoms, only Monera is prokaryotic and remaining four are Eukaryotic.

So the correct option is "four kingdom".

The five kingdom classification was proposed by 

biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. R.H. Whittaker

  2. C. Linnaeus

  3. A. Roxberg

  4. Virchow

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Correct Option: A
Explanation:

The five kingdom classification was proposed by R.H. Whittaker.

So, the correct option is 'R.H. Whittaker'.

The arrangement of parts in an organism in such a way that the structure can only be divided into similar halves along one plane is known as

biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

  1. Uniplanner symmetry

  2. Radial symmetry

  3. Bilateral symmetry

  4. Unique symmetry

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Correct Option: C
Explanation:

The property of being divisible into symmetrical halves on either side of a unique plane.

So, the correct option is 'Bilateral symmetry'.

Which of the following is water borne disease?

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

  1. Malaria

  2. Cholera

  3. Tuberculosis

  4. Both A and B

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Correct Option: B
Explanation:

Cholera is caused by the bacterium Vibrio cholerae. This bacteria is usually found in food or water contaminated by feces of an infected person. This is most likely to happen when sewage water mixes with a source of drinking water. Drinking water after boiling helps to prevent this infection. Thus the correct answer is option B.

Which of the following causes infectious diseases?

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

  1. Pollutants

  2. Harmful lifestyle

  3. Inheritance

  4. Microorganisms

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Correct Option: D
Explanation:

Pollutants are the harmful oxides or chemicals which degrade the quality of the environment and causes pollution. 

Harmful lifestyle affects the metabolic process of the body and leading to severe diseases and also causes ageing.
Inheritance is the transfer of characters from the parents to offsprings. 
Microorganisms are the small microorganism which are not visible to naked eye and carries the pathogens responsible for infectious disease.
So, the correct answer is option D.

Assertion: Rabies is acute infectious disease of warm blooded mammals characterized by involvement of central nervous system resulting in paralysis and finally death.

Reason: This is caused due to neurotropic filterable bacteria in saliva of rabid animals.

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

  1. If both the assertion and the reason are true and the reason is the correct explanation of the assertion

  2. If both the assertion and the reason are true and the reason is not the correct explanation of the assertion

  3. If the assertion is true and the reason is false

  4. If both the assertion and the reason is false

  5. If the assertion is false but the reason is true

Show answer
Correct Option: C
Explanation:

Rabies is an overwhelming encephalomyelitis and includes severe headache and high fever with excitement and depression. This disease occurs by a virus called Rhabdovirus.

Which common disease is also known as hydrobhobia?

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

  1. Rabies

  2. Dengue

  3. Typhoid

  4. Influenza

Show answer
Correct Option: A
Explanation:

Rabies is a viral infection that mainly spreads through a bite from an infected animal. It is an RNA virus of the rhabdovirus family.Once inside the nervous system, the virus produces acute inflammatiom of the brain. Coma and death soon follows. Encephelitus Rabies:This occurs in 80% of human cases. The person is more likely to experience hyperactivity and "hydrophobia".

So, the correct option is A. ( Rabies )