3.1.3 Bacterial Diseases

• What are bacterial diseases caused by?

  Bacteria
• Bacterial diseases and viral diseases have identical causative agents.

  False
• The size of bacteria is larger than viruses, ranging from 1-5 μm.
• Which bacterium causes pneumonia, meningitis, and sepsis?

  Streptococcus pneumoniae
• Proper treatment with antibiotics is crucial for managing bacterial infections.


  True
• Bacteria compete with host cells for essential nutrients and resources.
• What is the cellular structure of bacteria?

  Prokaryotic
• What are bacterial pathogens?

  Bacteria that cause diseases
• Proper treatment for bacterial infections often involves antibiotics
• Arrange the mechanisms of bacterial infection in the correct order:

  1️⃣ Toxin Production

  2️⃣ Invasion and Multiplication

  3️⃣ Competition for Resources
• Bacterial diseases are caused by single-celled organisms called bacteria
• The size of bacteria is typically between 1-5 μm
• Bacterial diseases are often treated with antibiotics
• Bacteria produce toxins
• What do bacteria compete with host cells for?

  Nutrients
• What is the primary basis for differentiating bacterial diseases?

  Infection mechanisms
• Bacteria compete for resources in diseases like pneumonia and meningitis.

  False
• Bacteria are microscopic, single-celled organisms
• Compare bacterial and viral diseases based on key characteristics:

  1️⃣ Causative Agent

  2️⃣ Size

  3️⃣ Cellular Structure

  4️⃣ Reproduction

  5️⃣ Treatment
• Bacteria reproduce through binary fission
• What type of treatment is crucial for managing bacterial infections?

  Antibiotics
• Bacteria can produce toxins that damage host cells.
• What is the causative agent of bacterial diseases?

  Bacteria
• Antibiotics are effective in treating viral diseases.

  False
• Mycobacterium tuberculosis is responsible for the disease tuberculosis.
• How does toxin production by bacteria harm host cells?

  Disrupts cellular processes
• Order the mechanisms of bacterial infection:

  1️⃣ Toxin Production

  2️⃣ Invasion and Multiplication

  3️⃣ Competition for Resources
• Streptococcus pneumoniae causes pneumonia, meningitis, and sepsis.
• Antibiotics are effective against all types of infections, including viral infections.

  False
• Streptococcus pneumoniae can cause pneumonia

  True
• Bacteria secrete toxins to damage host cells

  True
• Match the characteristic with the type of disease:

  Causative Agent ↔️ Bacteria for bacterial diseases, viruses for viral diseases

  Size ↔️ Bacteria are larger, viruses are smaller

  Cellular Structure ↔️ Bacteria are prokaryotic, viruses have no true structure

  Reproduction ↔️ Bacteria use binary fission, viruses hijack host cells

  Treatment ↔️ Antibiotics for bacteria, antivirals or vaccines for viruses
• Bacteria reproduce by binary fission


  True
• Bacteria compete directly with viruses for resources

  False
• Invasion and multiplication of bacteria within host cells disrupts their normal function.

  True
• Unlike bacteria, viruses hijack host cell machinery to replicate
• Match the mechanism with its examples:

  Toxin Production ↔️ Tetanus

  Invasion and Multiplication ↔️ Tuberculosis

  Competition for Resources ↔️ Dysentery
• What are the three underlying mechanisms by which bacteria cause harm to the host?

  Toxin production, invasion, resource competition
• Bacteria can produce toxins that damage host cells.


  True
• Match the bacterial pathogen with the diseases it causes:

  Streptococcus pneumoniae ↔️ Pneumonia

  Staphylococcus aureus ↔️ Food poisoning

  Escherichia coli (E. coli) ↔️ Gastroenteritis

  Mycobacterium tuberculosis ↔️ Tuberculosis

  Salmonella ↔️ Typhoid fever