Biology · Science General

Disease Causative Agents

2,531 Questions

Disease causative agents questions test your understanding of viral, bacterial, and fungal infections, along with their transmission methods. These are common topics in general science sections of SSC and railways exams. Practice these questions to accurately identify disease pathogens and symptoms.

Viral diseasesFoodborne illnessesDisease transmission methodsExtrinsic disease factorsCommon pathogens

Disease Causative Agents Questions

Multiple choice evs louis pasteur contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

Koch's postulates are about

  1. Nutrition related diseases

  2. Pathogen related diseases

  3. Genetic disorders

  4. Degeneration diseases
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Koch's postulates are used to trace back the causal organism of a particular disease in the host organism. It designed the causative relationship between a microbe and a disease. 

So, the correct answer is 'Pathogen related diseases' 

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Which of the following diseases has incubation period less than one week?

  1. Tuberculosis

  2. Leprosy

  3. Influenza

  4. Food poisoning
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The time between the infection in the host by a pathogen and the host begins to show symptoms is called as the incubation period. Some diseases have rapid incubation period whereas some have a longer period of incubation. food poisoning is the infection caused by the ingestion of spoiled food, has very rapid incubation period i.e., less than one week.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Food poisoning could be due to the consumption of ________

  1. Spicy food

  2. Food spoilt by some microorganisms

  3. Heavy diet

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

Microbes can make the food poisonous causing serious illness and even death. So, it is very important that we preserve food to prevent it from being spoilt. Microorganisms that grow on our food sometimes produce toxic substances.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Which of the following bacteria can cause food poisoning?


a) Clostridium
b) Staphylococci
c) Aspergillus

  1. a, b

  2. a, c

  3. b, c

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

The symptoms arise due to the presence of bacteria or other microbes in good due to ingestion of toxins contained in food. Some bacteria like Clostridium and Staphylococci and fungi like Aspergillus cause food poisoning.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Disease resulting from the consumption of contaminated food is ________________.

  1. Food adulteration

  2. Food poisoning

  3. Rancidity

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

Food poisoning as the name suggests is a disease that results from the consumption of contaminated food. Food adulteration means the presence of unwanted materials in the food item which alters the quality of food whereas rancidity means degradation of oil and fats present in the food item.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Which of the following is a food infection?

  1. Salmonellosis

  2. Malaria

  3. Staphylococcal intoxication

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Salmonellosis is an infection caused by Salmonella bacteria. Symptoms include diarrhoea, stomach cramps and sometimes vomiting and fever. It is transmitted by the contaminated food and thus called as foodborne diseases. 

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Common food poisoning microbes are

  1. Clostridium and Salmonella

  2. Clostridium and E.coli

  3. E.coli and Streptococcus

  4. Clostridium and Streptococcus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

the correct answer is 'Clostridium and E.coli'

Food poisoining occurs usually due to the toxin of E.coli and is a mild form. Sometimes, a severe and fatal form of food poisoning occurs due the toxin of Clostridium botulinum .
Salmonella causes typhoid.
streptococcus infections usually cause upper-respiratory tract infections.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

The disease caused due to the presence of large number of microorganisms in the food is called as 

  1. Food poisoning

  2. Food preservation

  3. Typhoid

  4. Chlolera
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The disease caused due to the presence of a large number of micro-organisms in the food or due to the presence of toxic substances in food formed by the action of microorganisms is called as food poisoning.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Foodborne botulism can affect

  1. Muscular system

  2. Nervous system

  3. Gastrointestinal system

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

Botulism is a serious foodborne disease caused by the neurotoxin leads to the paralysis and even death, produced by the spore-forming, obligate anaerobic. These produce endospores which can be destroyed by heating at high temperatures. The neurotoxin enters the nerve cells and interferes with the release of acetylcholine. Hence, it affects the nervous system.

Thus, the correct answer is option B.

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Which one among the following causes food poisoning?

  1. Clostridium botulinum

  2. Salmonella typhosa

  3. Clostridium tetani

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Food poisoning is caused by Clostridium botulinum. Botulism is a life-threatening bacterial disorder that is caused by Clostridium botulinum. It grows on food and produces neurotoxin, botulinum toxin that causes paralysis. 

Thus, the correct answer is 'Clostridium botulinum.'

Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

The following table lists the causative agents for four different diseases.

Disease Name Causative Agent
Influenza Virus
Taeniasis Tapeworm
Ringworm Fungus
Food poisoning Bacterium

For which of these diseases would treatment with antibiotics be most appropriate?

  1. Influenza

  2. Taeniasis

  3. Ringworm

  4. Food poisoning
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Influenza is the virus that causes common cold and flu, taeniasis is the parasitic disease caused by the tapeworms, ringworm is the skin related fungal infection and food poisoning is the infection caused by the ingestion of spoiled food, containing bacteria or bacterial toxins. The antibiotic is the medication used to treat the infection caused by the pathogenic bacteria. It kills of inhibiting the growth of bacteria. It does not effective on the virus, fungus or any other worms. Therefore, the correct answer is option D.
Multiple choice evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

Which of the following is the type of food poisoning?

  1. Botulism

  2. Salmonellosis

  3. Shigellosis

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

Food poisoning as the name suggests is a disease that results from the consumption of contaminated food. Botulism is the paralytic disease caused by consumption of improperly canned food contaminated with neurotoxins of Clostridium botulinum. Salmonella food poisoning is called as Salmonellosis. It occurs due to consumption of eggs, meat and poultry, and sometimes fruits and vegetables infected with Salmonella. Shigellosis is a type of food poisoning caused by infection with the Shigella bacterium. It is transmitted through contamination of salads, raw vegetables, milk and other dairy products, and poultry through the faecal-oral route. 

Thus, the correct answer is option D.

Multiple choice

What disease is the focus of oncology?

  1. Infections

  2. Diabetes

  3. Arthritis

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

Oncology is the branch of medicine that deals with the prevention, diagnosis, and treatment of cancer. Oncologists are the doctors who specialize in this field.

Multiple choice

Consumption is the former name of which disease

  1. The common cold

  2. Tuberculosis

  3. Lung Cancer

  4. The Flu
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Consumption was the historical name for tuberculosis because patients would 'waste away' or lose weight as the disease progressed. It specifically referred to TB, not colds, lung cancer, or flu.

Multiple choice

What is the germ theory of disease?

  1. I don't know

  2. theory that genetics cause many diseases

  3. theory that lifestyle causes many diseases

  4. theory that microorganisms are the cause of many diseases
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The germ theory of disease states that microorganisms, which are too small to see without magnification, are the cause of many diseases.