New
New
Year 10
OCR
Higher

Bacterial and viral diseases in humans: Salmonella and influenza

I can describe examples of common bacterial and viral diseases in humans, how they are spread, and ways to reduce the spread.

New
New
Year 10
OCR
Higher

Bacterial and viral diseases in humans: Salmonella and influenza

I can describe examples of common bacterial and viral diseases in humans, how they are spread, and ways to reduce the spread.

Lesson details

Key learning points

  1. Some, but not all, bacteria are pathogens that can cause communicable diseases in humans.
  2. Pathogenic bacteria produce toxins that damage living tissue and cause disease.
  3. Salmonella food poisoning as an example of a bacterial disease, how it is spread, and how the spread can be reduced.
  4. Viruses invade cells to reproduce where they cause damage to cells.
  5. Influenza as an example of a viral disease, how it is spread, and how the spread can be reduced.

Common misconception

Viruses are alive.

Viruses do not carry out many of the life processes required for living organisms such as respiration and reproduction.

Keywords

  • Bacteria - single celled prokaryote.

  • Pathogen - a micro-organism that causes disease.

  • Communicable disease - a disease that can be spread from person to person.

  • Toxin - a poison made by bacteria.

  • Virus - an infectious agent.

David Vetter can be mentioned later whilst you discuss viral infections. He eventually died because the bone marrow he received was infected with a dormant virus. He had no immune system to remove the virus.
Teacher tip

Equipment

None required.

Content guidance

  • Depiction or discussion of sensitive content

Supervision

Adult supervision recommended

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
Match the type of disease to its description.
Correct Answer:communicable,can be passed from person to person

can be passed from person to person

Correct Answer:non-communicable,cannot be spread from person to person

cannot be spread from person to person

Q2.
Which diseases are non-communicable?
Correct answer: cancer
measles
COVID-19
Correct answer: heart disease
flu
Q3.
Which picture shows a bacterium?
A
B
Correct answer: C
Q4.
Match the word to its definition.
Correct Answer:pathogen,A micro-organism that causes disease.

A micro-organism that causes disease.

Correct Answer:virus,An infectious agent.

An infectious agent.

Correct Answer:bacteria,A single celled prokaryote.

A single celled prokaryote.

Q5.
Which of the following can be pathogens?
plants
Correct answer: viruses
Correct answer: protists
Correct answer: fungi
Correct answer: bacteria
Q6.
What is a vaccination?
An injection.
Correct answer: A substance; used to stimulate the body's immune response against disease.
A substance you take when you are ill.

6 Questions

Q1.
True or false? Pathogens are microorganisms that cause disease.
Correct answer: true
false
Q2.
Pathogenic bacteria can produce that damage living tissue and cause disease.
Correct Answer: toxins, poisons, toxin, poison
Q3.
Match the disease to how it is spread.
Correct Answer:Salmonella,Spread by consuming contaminated food and water.

Spread by consuming contaminated food and water.

Correct Answer:flu,Spread through mucus droplets when coughing and sneezing.

Spread through mucus droplets when coughing and sneezing.

Q4.
What are the symptoms of salmonella?
Correct answer: high temperature
Correct answer: diarrhea
shortness of breath
Correct answer: vomiting
Correct answer: stomach cramps
Q5.
Put the steps in order to show how a virus replicates using a host cell.
An image in a quiz
1 - Virus enters the host cell.
2 - The cell replicates the virus.
3 - Virus bursts out of the cell causing damage to the host.
Q6.
What is the best way to stop the spread of flu?
hand washing
Correct answer: vaccination
staying indoors
eating a healthy diet