8C Doctors and diseases

Mr Sedgwick 30 03 11

Under Attack

All Describe how microbes can be carried from person to person in various ways.

Most Describe a disease caused by each type of microbe

Some Explain one way our body copes with parasites

Keywords

Disease FeverInfect DiagnosisInfectiousSymptomsParasite, vector

Soy sauce - Aspergillus

Soy sauce - Aspergillus

Soy sauce - Aspergillus

Yoghourt - Lactobacillus

Blue cheese - Penicillium

Budding yeast cells

Aerobic respiration

Glucose + oxygen →

Anaerobic respiration

Glucose →

What’s the limiting factor?

All – Starter about pathogens and Worksheet Starter

Most – Diseases wordsearch

Some – Page 40 Qn 1 - 10

Success Criteria

How do microbes enter the body?

There are 7 ways for diseases to enter the body, can you get them all?

You have 1 minute

Microbes can enter the body in many different places.

How do microbes enter the body?

eyes

mouth

cuts

nose

ears

genitals

skin

Different defence mechanisms

Bacterium structure

Virus structure

Fungi (yeast) structure

You have 2 minutes to study this table very carefully and try to remember it!

viruses bacteria

influenza (flu) food poisoning

mumps sore throats

chickenpox tuberculosis (TB)smallpox tetanus

polio cholera

rabies typhoid

German measles whooping cough

fungi

fungal sinusitis

athlete’s footOnychomycosis(causes discoloured

toe nails)

viralmeningitis

bacterialmeningitis

Which type of microbe?

What do white blood cells do?The human body has a number of natural defences against microbes. Noses are hairy inside to trap microbes!

Some white blood cells can destroy microbes by engulfing them.

Some white blood cells are able to produce chemicals called antibodies. These pairing with matching antigens on the surfaces of microbes and so help the white blood cells to engulf microbes.

white blood cell

antibody

antigen

The body also produces white blood cells to help defend it from microbes.

White blood cells

• http://www.dnatube.com/video/4330/White-Blood-Cell-Chases-Bacteria

• http://animations.3d4medical.com/Phagocytosis-animation_AN2435.html

Antibodies

• http://www.youtube.com/watch?v=lrYlZJiuf18

Plenary

Plenary