MICROBES
(aka BACTERIA)
It's a small world after all...
Some people call them
"germs".
But are they really all bad?
HELPFUL BACTERIA
HARMFUL BACTERIA
N.F.B.
(Nitrogen Fixing Bacteria)
They live on the roots of plants called
LEGUMES.
(You can tell legumes because they have "pods"
ex. beans, peas. Also, they're really good for
you when you eat them!)
Click here for a video - 3:34
THE NITROGEN CYCLE
Are there any
bacteria that are
"good" for us?
THE HUMAN
MICROBIOME PROJECT
Researchers in the HMP are sampling and
analyzing the genome of microbes from five sites
on the human body: nasal passages, oral
cavities, skin, gastrointestinal tract, and
urogenital tract.
YES!! There are over 100 trillion bacteria in EACH of us that are
there for a good reason. We don't know how yet, but we are learning.
So you are really just s SUPER-ORGANISM - made of our
multicellular body, plus trillions of microbes, all working together.
WOW!
(Click on the image for a short video 5:28)
General notes on bacteria:
The Three Shapes of Bacteria
What does diplo- mean?
What does staphylo- mean?
What does strepto- mean?
FOODS AND BACTERIA
(What a battle!)
What are some ways that we
use to keep bacteria from
spoiling our food?
DRYING FOODS
SALTING FOODS
SMOKING FOODS
PICKLING FOODS
ex.
ex.
ex.
ex.
How does it work?
How does it work?
How does it work?
How does it work?
COOKING FOODS
PRESERVING
FOODS
REFRIGERATING & CHEMICAL
FREEZING FOODS PRESERVATIVES
ex.
ex.
ex.
How does it work?
How does it work?
How does it work?
ex.
How does it work?