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 most common type of hepatitis?

  1. Hepatitis A

  2. Hepatitis B

  3. Hepatitis C

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

Hepatitis A is the most common type of hepatitis worldwide. It is spread through contact with contaminated food or water.

Multiple choice

What is the most common cause of meningitis in adults?

  1. Streptococcus pneumoniae

  2. Neisseria meningitidis

  3. Haemophilus influenzae

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

Streptococcus pneumoniae is the most common cause of bacterial meningitis in adults, accounting for approximately 50% of cases. It can cause inflammation of the meninges, the membranes surrounding the brain and spinal cord.

Multiple choice

What was the name of the event that led to the start of the COVID-19 pandemic?

  1. Wuhan seafood market outbreak

  2. SARS-CoV-2 virus identification

  3. WHO declaration of a pandemic

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

The outbreak of a novel coronavirus at a seafood market in Wuhan, China, in December 2019, was the event that led to the start of the COVID-19 pandemic.

Multiple choice

Which of the following is a chronic disease that affects the skin and can cause redness, itching, and scaling?

  1. Eczema

  2. Psoriasis

  3. Acne

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

Eczema, psoriasis, and acne are all chronic skin conditions. Eczema is a condition in which the skin becomes red, itchy, and inflamed. Psoriasis is a condition in which the skin becomes red, scaly, and thickened. Acne is a condition in which the skin produces too much oil, which can lead to the formation of pimples and blackheads.

Multiple choice

Which of the following is a chronic disease that affects the liver and can cause liver damage, cirrhosis, and liver failure?

  1. Hepatitis B

  2. Hepatitis C

  3. Alcoholic liver disease

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

Hepatitis B, hepatitis C, and alcoholic liver disease are all chronic liver diseases. Hepatitis B and hepatitis C are viral infections that can damage the liver. Alcoholic liver disease is a condition that is caused by drinking too much alcohol. All of these conditions can lead to liver damage, cirrhosis, and liver failure.

Multiple choice

Which of the following is a chronic disease that affects the immune system and can cause fatigue, weight loss, and night sweats?

  1. HIV/AIDS

  2. Lupus

  3. Multiple sclerosis

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

HIV/AIDS, lupus, and multiple sclerosis are all chronic immune system diseases. HIV/AIDS is a viral infection that attacks the immune system. Lupus is an autoimmune disease in which the body's immune system attacks its own tissues. Multiple sclerosis is a neurological disease in which the immune system attacks the myelin sheath that surrounds the nerve cells in the brain and spinal cord.

Multiple choice

In the novel The Andromeda Strain, what is the name of the deadly alien microorganism that threatens to wipe out all life on Earth?

  1. The Andromeda Strain

  2. The Martian Virus

  3. The Black Death

  4. The Ebola Virus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Andromeda Strain features a team of scientists who are tasked with investigating a deadly alien microorganism that threatens to wipe out all life on Earth.

Multiple choice

What is the most common cause of urethritis?

  1. Bacteria

  2. Virus

  3. Fungus

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

Bacteria are the most common cause of urethritis, with the most common type of bacteria being Chlamydia trachomatis, which causes chlamydia.

Multiple choice

What are the complications of urethritis?

  1. Pelvic inflammatory disease

  2. Epididymitis

  3. Prostatitis

  4. Infertility

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Urethritis can lead to a number of complications, including pelvic inflammatory disease, epididymitis, prostatitis, and infertility.

Multiple choice

Which of the following is a common foodborne illness caused by bacteria?

  1. Salmonella

  2. E. coli

  3. Listeria

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

Salmonella, E. coli, and Listeria are all common foodborne illnesses caused by bacteria.

Multiple choice

What are some common food safety hazards?

  1. Bacteria

  2. Viruses

  3. Parasites

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

Bacteria, viruses, and parasites are all common food safety hazards.

Multiple choice

What is the primary cause of pneumonia in children?

  1. Bacteria

  2. Viruses

  3. Fungi

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

Bacterial pneumonia is the most common type of pneumonia in children, caused by bacteria such as Streptococcus pneumoniae and Haemophilus influenzae.

Multiple choice

What is the primary mode of transmission for respiratory syncytial virus (RSV), a common cause of respiratory infections in children?

  1. Airborne droplets

  2. Contact with contaminated surfaces

  3. Ingestion of contaminated food or water

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

RSV is primarily transmitted through airborne droplets produced by coughing, sneezing, or talking.

Multiple choice

Which of the following is a common cause of croup, a respiratory infection characterized by a barking cough?

  1. Parainfluenza virus

  2. Influenza virus

  3. Respiratory syncytial virus (RSV)

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

Parainfluenza virus is the most common cause of croup, particularly in young children.

Multiple choice

Which of the following is a common complication of pneumonia in children?

  1. Empyema

  2. Pericarditis

  3. Meningitis

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

Pneumonia in children can lead to complications such as empyema (collection of pus in the pleural space), pericarditis (inflammation of the heart sac), and meningitis (inflammation of the brain and spinal cord membranes).