Pathogens and Immunity
Presentation
•
Biology
•
4th - 11th Grade
•
Hard
Joseph Anderson
FREE Resource
3 Slides • 5 Questions
1
by AYZASUZANA Moe
2
PATHOGENS : microorganisms that cause diseases.
examples : bacteria, viruses, fungi and protozoa
ANTIGENS : foreign proteins on the surface of pathogens (bacteria, viruses) , proteins in snake venom and toxins (poisonous protein) produced by bacteria.
ANTIBODIES: proteins produced by lymphocytes in response to the presence of an antigen.
antibodies react with antigens and destroy the antigens.
IMMUNITY : ability of the body to resist an infection of a pathogen.
3
4
Multiple Select
List the THREE lines of Defence
first line of defence
second line of defence
third line of defence
immunity defence
5
Multiple Select
A defense mechanism is usually used
Unconsciously
Consciously
Subconsciously
Passively
6
Multiple Choice
What is a pathogen?
A germ that causes disease
A disease
A microbe that causes disease
Something that can make you feel very ill
7
Fill in the Blanks
Which 2 features does your nose have to prevent pathogens from entering the body?
Type answer...
8
Fill in the Blanks
What lines your trachea to help prevent pathogens from entering your lungs?
Type answer...
by AYZASUZANA Moe
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