Y3-TV3-Lesson 6 GKR

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

Homeostasis, Health & Disease

Lesson 6

This lesson

• Kwizl part 2 (chapter 7)
• Pathogens: transmission and barriers
• Assignment 1 check
• Assignment 2

Practice Quiz on KWIZL

• 8 min max practice quiz.
• 7 min max peer review and feedback.
• 5 min max write a reflection in your notebook:
• What mistakes did I make?
• Why were they mistakes?
• What can I do better next time?

Assignment 1

1. All microbes are bad for you. FALSE

2. All pathogens can make you ill. TRUE

3. All pathogens produce toxins that make you ill. FALSE

4. All pathogens are living organisms. FALSE

5. Parasites are the largest of the pathogens. TRUE

Assignment 2

1. Athlete’s feet is a pathogen:

a. Which pathogen causes it? A FUNGUS

b. How does it spread? BY DIRECT CONTACT, TOUCHING INFECTED SKIN, OR TOUCHING SURFACES THE INFECTED SKIN HAS BEEN IN CONTACT WITH

c. How can you prevent it? DRYING WELL IN BETWEEN YOUR TOES & WEARING FLIP FLOPS AT PUBLIC BATHS AND SWIMMING POOLS.

Assignment 2

2. Salmonella is a dangerous pathogen:

a. Which pathogen causes it? A BACTERIUM

b. How does it spread? IT SPREADS THROUGH UNCOOKED EGGS AND CHICKEN

c. How can you prevent it? PROPER KITCHEN HYGIENE AND MAKE SURE YOU COOK EGGS AND CHICKEN PROPERLY

Assignment 2

3. Name 4 microbes that are not harmful and explain what they do.

• Fungi like yeast or bacteria like Lactobacilli are essential in the food industry.
• Species of bacteria as Streptomyces are responsible for the production of more than 500 different antibiotics. Similarly, there are antibiotics produced from fungi and other types of bacteria.

Assignment 2

3. Name 4 microbes that are not harmful and explain what they do.

• Microorganisms play a vital role in the handling and disposal of domestic and industrial waste. They are responsible for cleaning the waste through a biological process of decomposition or stabilisation of organic matter. 
• The microflora is also responsible for defending the body from fungi and bacteria harmful to human health. It produces vitamin K, which is necessary to regulate blood clotting processes.

Learning Goals

• I know what pathogens are.
• I know how pathogens spread.
• I understand how to prevent the pathogens from spreading.
• I understand how we protect our bodies from pathogens.

How do pathogens affect us?

Pathogens can cause diseases in 2 ways:

• They destroy living tissue
• They make poisonous waste: toxins

Parasites

An organism that lives in or on an organism of another species (its host) and benefits by deriving nutrients at the other's expense.

Malaria

Parasite: Plasmodium

Vector: mosquito

Disease: Malaria

Vector? yes or no?

mosquito              tapeworm               tick     

Vector? yes or no?

mosquito yes       tapeworm no           tick yes    

Homework for next time

• Study the glossaries on StudyGo
  
• Make question 1-5 of the assignment chapter 10 (part 2)
• Revise your notes on the previous lessons