B5 - Communicable disease

Independent Learning

Introduction

Communicable diseases are diseases caused by pathogens such as bacteria and viruses. In this topic, you will study the ways in which diseases can be transmitted between animals and plants. You will also study several different diseases caused by different pathogens and look at the ways in which our bodies combat infection. Set 1 will also study how bacteria are grown in the lab and diseases in plants.

Task 1: Know

Task 1a: Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic.

B5 Knowledge Organiser - HCS

Task 1b: Listen to the appropriate podcast to get an overview of the topic

Set 1

Set 2

Set 3

Learn

Task 2: Health and disease

Task 2a: Read through the slides and watch the video

Lesson 1- Health and Disease - Default

Task 2b: Make notes that:

  • Define health

  • Define communicable and non-communicable diseases

  • Describe how diet stress and life situations can affect health

  • Describe how different health problems can interact

  • Explain why patients with HIV are more likely to develop TB

Task 2c: Complete and mark the exam question

Task 3: Pathogens and diseases

Task 3a: Read through the slides

Lesson 2- Pathogens and Diease- Default

Task 3b: Make notes that

  • Define pathogen

  • Name the four types of pathogen

  • Describe and compare how diseases are caused by bacteria and viruses.

  • Describe and explain how pathogens can be spread between people and plants.

Task 3c: Complete the questions on slide 27 in full sentences using the video for information. Compare the situation for Ebola with the Covid-19 situation.

Students in set 2 & 3 go to task 6

Task 4: Growing bacteria in the lab - Set 1 only

4a: Read through the slides

Lesson 3 - Growing Bacteria in the Lab- SEPS ONLY

4b: Watch the video

4c: Make notes that:

  • Describe how bacteria grow and divide

  • State the things bacteria need to grow in the lab

  • Explain why scientists grow bacteria in the lab

  • Describe a method for growing bacteria in the lab.

  • Explain the precautions required to ensure the bacterial culture remains uncontaminated.

  • Explain the safety precautions taken when growing bacterial cultures in schools.

4d: Complete and mark the exam question

OPTIONAL: Have a go at producing your own streak plate using this simulation (flash player needs to be enabled)

Task 5: Preventing bacterial growth - Set 1 only

5a: Read through the slides

Lesson 4 - Preventing Bacterial Growth Required Practical- SEPS- Default

5b: Watch the video (again!)

5c: Make notes that:

  • Explain how to calculate bacterial growth with an example.

  • Describe the uses of antibiotics, antiseptics and disinfectants.

  • Describe a method to test the effectiveness of disinfectants and antiseptics to kill bacteria.

  • Explain the different controls needed for your method.

  • Explain how to calculate the effect of disinfectants and antiseptics at killing bacteria.

5d: Complete and mark the exam question

Task 6: Preventing infection (all sets)

6a: Read through the slides and watch the video

Lesson 5- Preventing Infection - Default

6b: Complete the table on slide 13 using the information about the work of Semmelweiss

6c: Make notes that.

  • Describe the work of Ignaz Semmelweiss that isn’t covered in your table.

  • Explain why Semmelweiss’ work was not accepted by all.

  • Describe and explain how hygiene, isolation, destruction of vectors and vaccination can reduce the spread of disease.

6d: Complete the appropriate progress quiz.

Task 7: Viral and bacterial diseases

7a: Read through the slides

Lesson 6&7 Viral and Bacterial Dieases - Default

7b: In your notes:

  • Copy the table on slide 9 and complete using the information on the slides for viral diseases.

  • Copy the table on slide 15 and complete using the information on the slides for bacterial diseases.

  • Describe and explain different ways of preventing the spread of each type of disease.

7c: Complete the task 7 quiz

Task 8: Diseases caused by fungi and protists

8a: Read through the slides

Lesson 7 - Fungi and Protists - Default

8b: Make notes that:

  • Describe and compare the structure of fungi and protists

  • Describe how Rose Black Spot affects plants

  • Describe and explain how to treat Rose Black Spot

  • Describe the malaria life cycle.

  • Describe and explain how the spread of malaria can be prevented.

8c: Complete and mark the exam questions

Task 9: Human defence responses

9a: Read through the slides

Lesson 8 - Human Defence Responses - Default

9b: Make notes that:

  • Describe and explain how the skin, respiratory system and digestive system prevent pathogens from entering the body.

  • Describe how white blood cells protect the body from infection (3 methods).

9c: Complete and mark the exam questions

Set 2 & 3 go to task 11 now

Task 10: Plant diseases and defence - Set 1 only

10a: Read through the slides

Lesson 09 - Plant Diseases and Defence - SEPS ONLY - Default

10b: Make notes that:

  • Describe and explain the effect Aphids have on plants

  • Describe methods to treat Aphid infestation.

  • Describe the effects of nitrate and magnesium deficiency on plants.

  • List the signs of plant disease

  • Describe the ways to identify a plant disease.

  • Describe and explain the ways in which plants protect themselves from disease and pests.

10c: Complete and mark the exam question

Task 11: Summary

11a: Watch the video

11c: Make a mind map or single page revision summary of this topic. Use the specification links to help you.

Task 12: Check

Complete the quiz for your set to make sure you understand this unit.