pathogens

• What is meant by a pathogen?

  A pathogen is a microorganism that causes infectious disease.
• What are the main types of pathogens discussed in the video?

  The main types of pathogens are bacteria and viruses.
• How do bacteria cause illness?

  Bacteria reproduce rapidly and release harmful chemicals called toxins.
• How often can bacteria divide under ideal conditions?

  Bacteria can divide every 20 minutes under ideal conditions.
• What is the role of toxins released by bacteria?

  Toxins damage tissues and make us feel ill.
• What is the virus mentioned in the video that can lead to AIDS?

  The virus is HIV.
• How do viruses reproduce?

  Viruses can only reproduce inside a host cell.
• What happens to a host cell when a virus reproduces inside it?

  The host cell can burst open and die when the virus leaves it.
• What are the three ways pathogens can be spread?

  Pathogens can be spread through the air, direct contact, and contaminated water.
• What is an example of a disease spread through air droplets?

  An example is influenza.
• How is cholera spread?

  Cholera is spread when drinking water polluted by sewage.
• How can HIV be spread?

  HIV can be spread through sharing infected needles and sexual contact.
• What is one way to reduce the spread of pathogens?

  Practicing basic hygiene, such as washing hands before eating, can reduce the spread.
• How does providing clean drinking water help prevent the spread of pathogens?

  Clean drinking water reduces the risk of waterborne diseases.
• How does using a condom during sexual intercourse help prevent the spread of HIV?

  Using a condom reduces direct contact and the risk of transmission.
• What is one method of isolating patients to prevent disease spread?

  Isolating patients with highly infectious diseases like Ebola prevents the pathogen from spreading.
• How can vaccination help reduce the spread of pathogens?

  Vaccination helps build immunity against specific pathogens.
• What are the key points about pathogens and their spread?

  • Pathogens are microorganisms causing infectious diseases.
  • Types include bacteria, viruses, protists, and fungi.
  • Bacteria reproduce rapidly and release toxins.
  • Viruses reproduce inside host cells and can damage them.
  • Pathogens spread through air, direct contact, and contaminated water.
  • Hygiene, clean water, isolation, and vaccination can reduce spread.