B3 KO Page 1 Flashcards
Communicable
disease
one that can be spread between
individuals
Non
communicable
one that cannot be spread between
individuals
Pathogen
micro-organism that causes disease
Bacteria
Prokaryotic cell that can cause liness
by releasing toxins
Virus
Non-living pathogen that invades
body cells, eventually bursting them much smaller than bacteria.
Fungus
eukaryotic organisms that do not
photosynthesise so in some ways are
more closely linked to animals than
plants.
protist
Microscopic,unicelular eukaryotic
organisms.The parasitic diseases that
they cause can be life threatening.
vector
organism that carries the disease e.g.
the mosquito carrying the malaria
protist
Good hygiene
A way of reducing or preventing the
spread of a pathogen
Antiseptics
chemicals that kill micro-organisms
Non-specific
defense system
Parts of the body that try to prevent
pathogen entry
Immune system
How the body tries to destroy
pathogens that have got past the
non-specific defenses
White blood
cells
Cells of the immune system
phagocytes and lymphocytes which
have different functions
What are some examples
of pathogens that cause
communicable diseases?
Bacteria,viruses,fungus and
protozoa
What are some examples
of non-communicable
diseases?
Arthritis and heart attacks
How can pathogens be
spread?
Direct contact,by water or by air
How do bacteria and
viruses differ in making us ill
Bacteria produce toxins and
viruses invade cells, eventually destroying them
What are the symptoms of
the3viral diseases you
need to know?
Measies-fever and red skin rash
HIV-flu-like liness potentially
leading to AIDS
TMV-discolouration of leaves
What are the symptoms of
the 2 bacterial diseases
you need to know about?
Salmonella-fever,abdominal cramps,vomiting,diacea Gonorrhoea-thick yellow or green discharge from genitas and pain when urinating
What is rose black spot?
A fungal disease where purple or black spots develop on leaves,which often tum yellow
and drop early.It affects the growth of the plant as photosynthesis is reduced
How can malaria be
prevented?
Preventing the vectors,
mosquitos,from breeding and
using mosquito nets to avoid
being bitten.
How can pathogen
spread be reduced?
Hand washing, wearing a mark isolation, destruction of vectors.
being hygienic, antiseptics
