microbes cause disease!! messana science 8. microbes = microorganism, microscopic organism...
TRANSCRIPT
MICROBES CAUSE DISEASE!!
MessanaScience 8
MICROBES• = Microorganism, Microscopic Organism• _______________• _______________• _______________• _______________• _______________• Found _________________...water, surface of
living things, inside living organisms
DISEASE• Caused by a __________entering a place in
the body where they_____________________• Organism experiences ___________function• Show _______________= your body’s
response to disease (fever, vomiting, joint pain, skin condition, etc.)
• Can be _____________________________or _____________________________________
BACTERIA
• Single celled organisms – _________• Very small, Need microscope to see• **________________• Can be found on most materials and
surfaces – Soil, Water, Air, etc.• Billions on your _________and in
your body’s _____________track right now!
Harmless bacteria on the stomach lining
E. Coli O157:H7 can make you very sick.
Streptococcus can cause strep throat.
BACTERIA• Different shapes =_______________________• Have cell membrane, cell wall, &___________• Cytoplasm contains _________material
floating _________+ ribosomes (_________________or other organelles)
• Has ____________________& pili• Can move, reproduce, eat, etc.
Typical Bacterial Cell
Helpful vs. Harmful Bacteria• Harmful Bacteria = Germs, _______________– Cause disease by ___________________into body– Toxins are the _________________ from bacteria– Bacterial infections fever, swelling, rash– Treat with___________________!
• Helpful Bacteria:– Eat other ____________substances– Help plants and animals __________________to
be used by organism– ____________ food in your stomach
Clean skin has about 20 million bacteria per square inch
Viruses• VERY small!• Contains protein coat =________• Contains ______ or ______• NOT A ____________ CELL!!• _________ reproduce, eat, move, or maintain
homeostasis• Try to get inside ______________to reproduce• Must fit cell membrane like “________________”
Virus Replication• If virus finds suitable living host
cell…–DNA or RNA directs host cell to
_________________of virus particle–Copies of virus cause host cell
to____________________!–Viruses go on to
_________________cells
Virus invading Bacterial Cell
Viruses• Shaped life on Earth• Cause ____________in plants & animals• Affected _______________by
redistributing genes• Can protect organisms from
environmental contaminants• __________________viral infections
with anything – have to ______________
Parasites• An organism that has a _____________
relationship with a _________organism• Parasite lives _______or ______ the host• Slowly __________or _______host _________• EX:______________, bacteria,
ticks,_________________, heartworm, mites, fleas, athlete’s foot, fungi, invertebrate insects
• Are you ready for these pictures!?
Parasites
Fish Parasite & Blood Parasite