Transcript B1a4.3 - BristolSchoolsAQANetwork

B1a.4.3
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• Many of the medicines we take when we
have infections are not cures but simply
relieve symptoms.
• They reduce our discomfort and give our
bodies time to recover using our natural
defences.
Do you remember what our natural defences
are?
How do Aspirin and Paracetamol work?
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• The amazing class of drugs which really can
cure are called ANTIBIOTICS.
• They have the power to destroy disease
carrying bacteria.
They have helped to treat some of the worst
infectious diseases known to man.
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics
.
• Some diseases are so terrible that we use
innoculation and vaccination to try to
prevent spread of infection.
• Others we can now treat to prevent the
worst of the symptoms developing
Death from diseases
which were once
common
Tetanus
Bubonic Plague - Black Death
Smallpox
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
Write the Heading
‘Using Drugs to Treat Diseases’
1. Explain the difference between a drug like Aspirin
and a drug like Penicillin (an Antibiotic)
You have 4 minutes to do this.
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• Alexander Fleming discovered Penicillin in
1928.
• Read the story of this discovery on page
66.
• Now write a full answer to question 2 on
page 67
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• Now lets read about
how antibiotics work.
• Page 67
On these plates, discs soaked in
antibiotics are placed on the
growing colonies. We can see
the most effective antibiotics.
These plates show colonies of
bacteria growing.
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• Complete your written work by answering
the last of the summary questions.
• Finally Look at the Key Points box.
• Number 3 is especially important. Can you
explain why a doctor will not give you
antibiotic as a cure for a cold?
Objectives:
All to know what is classed as a medicine.
All to know why viral infections cannot be treated with antibiotics.
• Plenary.
• Close your books.
• Work in Pairs. Call yourselves A and B
• ‘A’ - Can you explain what a medicine is
to your partner?
• Now ask ‘B’ to explain why antibiotics are
no good in treating viruses.