Tag: pathogen and their mode of transmission

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


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

  1. cell wall

  2. ribosomes

  3. plasma membrane

  4. mitochondria
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

Artificial systems of classification were based on

  1. Vegetative characters

  2. Androecium structure

  3. All of these

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

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

  1. two kingdoms

  2. three kingdoms

  3. four kingdoms

  4. all the five kingdoms
Reveal answer Fill a bubble to check yourself
C Correct answer
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".

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

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

  1. Uniplanner symmetry

  2. Radial symmetry

  3. Bilateral symmetry

  4. Unique symmetry
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

So, the correct option is 'Bilateral symmetry'.

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

Which of the following is water borne disease?

  1. Malaria

  2. Cholera

  3. Tuberculosis

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Which of the following causes infectious diseases?

  1. Pollutants

  2. Harmful lifestyle

  3. Inheritance

  4. Microorganisms
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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.

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Which common disease is also known as hydrobhobia?

  1. Rabies

  2. Dengue

  3. Typhoid

  4. Influenza
Reveal answer Fill a bubble to check yourself
A Correct answer
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 )