Biology ยท 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

What is the primary cause of laminitis in horses?

  1. Bacterial infection

  2. Viral infection

  3. Excessive weight bearing

  4. Nutritional deficiency
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Laminitis in horses is primarily caused by excessive weight bearing on the hooves, often due to factors such as obesity, prolonged standing on hard surfaces, or hoof abnormalities.

Multiple choice

Which of the following is a common non-infectious skin disease in dogs?

  1. Mange

  2. Ringworm

  3. Dermatitis

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

Dermatitis is a general term for skin inflammation in dogs, often caused by non-infectious factors such as allergies, environmental irritants, or nutritional deficiencies.

Multiple choice

Which of the following is a non-infectious respiratory disease in cattle?

  1. Pneumonia

  2. Bovine viral diarrhea

  3. Emphysema

  4. Lung abscess
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Emphysema is a non-infectious lung disease in cattle characterized by the enlargement of air spaces in the lungs, leading to difficulty breathing and reduced oxygen levels.

Multiple choice

What is the primary cause of milk fever in dairy cows?

  1. Bacterial infection

  2. Viral infection

  3. Hypocalcemia

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

Milk fever, also known as hypocalcemia, is a non-infectious metabolic disorder in dairy cows that occurs due to a sudden drop in blood calcium levels, often around the time of calving.

Multiple choice

Which of the following is a non-infectious disease that affects the nervous system of animals?

  1. Rabies

  2. Tetanus

  3. Encephalitis

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

Tetanus is a non-infectious bacterial disease that affects the nervous system of animals, causing muscle spasms and rigidity, often due to contamination of wounds with Clostridium tetani bacteria.

Multiple choice

Which of the following is a non-infectious disease that affects the heart of animals?

  1. Myocarditis

  2. Endocarditis

  3. Pericarditis

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

Cardiomyopathy is a non-infectious disease of the heart muscle, leading to impaired heart function and symptoms such as fatigue, shortness of breath, and arrhythmias.

Multiple choice

Which of the following is a non-infectious disease that affects the bones of animals?

  1. Osteomyelitis

  2. Arthritis

  3. Osteoporosis

  4. Paget's disease of bone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Osteoporosis is a non-infectious bone disease characterized by decreased bone density and increased risk of fractures, often associated with aging, hormonal imbalances, or nutritional deficiencies.

Multiple choice

What is the most common illness among student travelers?

  1. Diarrhea

  2. Malaria

  3. Influenza

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

Diarrhea is the most common illness among student travelers, affecting up to 50% of travelers.

Multiple choice

What was the Black Death?

  1. A bacterial infection spread by fleas

  2. A viral infection spread through the air

  3. A parasitic infection spread through contaminated water

  4. A fungal infection spread through skin contact
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Black Death was a devastating pandemic caused by the bacterium Yersinia pestis, primarily transmitted through fleas.

Multiple choice

Which disease was responsible for the Spanish Flu pandemic of 1918-1919?

  1. Influenza virus

  2. Bubonic plague

  3. Smallpox

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

The Spanish Flu pandemic was caused by an influenza virus, resulting in an estimated 50-100 million deaths worldwide.

Multiple choice

Which of the following is a common cause of acute cholecystitis?

  1. Gallstones

  2. Bacterial infection

  3. Viral infection

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

Gallstones are the primary cause of acute cholecystitis, accounting for approximately 90-95% of cases.

Multiple choice

Which of the following is a common respiratory disease characterized by inflammation and narrowing of the airways?

  1. Asthma

  2. Chronic obstructive pulmonary disease (COPD)

  3. Pneumonia

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

Asthma is a chronic respiratory disease characterized by inflammation and narrowing of the airways, leading to recurrent episodes of wheezing, coughing, chest tightness, and shortness of breath.

Multiple choice

What is the causative agent of tuberculosis?

  1. Bacteria

  2. Virus

  3. Fungus

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

Tuberculosis is caused by a type of bacteria called Mycobacterium tuberculosis. It primarily affects the lungs, but can also spread to other parts of the body.

Multiple choice

Which of the following is a common respiratory disease characterized by recurrent episodes of wheezing, coughing, and difficulty breathing?

  1. Asthma

  2. COPD

  3. Pneumonia

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

Asthma is a chronic respiratory disease characterized by recurrent episodes of wheezing, coughing, and difficulty breathing, often triggered by allergens, irritants, or exercise.

Multiple choice

What are some of the most common types of food poisoning?

  1. Salmonella

  2. E. coli

  3. Listeria

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

Some of the most common types of food poisoning include Salmonella, E. coli, and Listeria.