1. Why CAN’T we live forever????

2. GERMS!!!

3. GERMS aka HARMFUL MICROBES!!!

4. GERMS aka HARMFUL MICROBES aka HARMFUL MICRO-ORGANISMS!!!

5. GERMS aka HARMFUL MICROBES aka HARMFUL MICRO-ORGANISMS!!!
PATHOGENS / CONTAGIONS

6. MICRO-ORGANISMS = MICROBES
BACTERIA
VIRUSES
PROTOZOA (protists)
some FUNGI
some PARASITES

7. PATHOGENS = CONTAGIONS = GERMS
BACTERIA
VIRUSES
PROTOZOA (protists)
some FUNGI
some PARASITES
HARMFUL
HARMFUL
HARMFUL
HARMFUL
HARMFUL

8. What is the smallest of ALL living things?
BACTERIA
VIRUSES
PROTOZOA (protists)
some FUNGI
some PARASITES

9. What is the smallest of all living things?
BACTERIA
VIRUSES
PROTOZOA (protists)
some FUNGI
some PARASITES

10. the smallest living thing
Bacterium
the smallest living thing

11. Bacterium
So what does the smallest living thing do that ALL living things do??? (including you and me)

12. CELL THEORY YOU SHOULD ALREADY HAVE THIS.
ALL LIVING THINGS are made of CELLS.
ALL CELLS arise from (come from) other CELLS.
CELLS are the smallest STRUCTURE of life.
CELLS can carry out ALL FUNCTIONS of life.
YOU SHOULD ALREADY HAVE THIS.
Even 1- celled little microbes…

13. ALL CELLS must:
ABSORB & USE ENERGY… chemical energy of course

14. ALL CELLS must:
absorb & use energy to GROW…

15. ALL CELLS must: absorb & use energy to GROW & REPRODUCE…
stentor budding…weird reproduction
cCvhYmjaXE

16. WHAT MUST BACTERIA DO IN ORDER TO BE ALIVE?
Bacterium
WHAT MUST BACTERIA DO
IN ORDER TO BE ALIVE?
Like us they GROW
REPRODUCE!
ABSORB & USE CHEMICAL ENERGY!

17. Bacteria are SINGLE-CELLED organisms that are SMALLER THAN OUR BODY’S CELLS.
How much smaller?
Check out an e.coli bacterium versus our red blood cell.

18. UNICELLULAR
Bacteria are SINGLE-CELLED organisms that are smaller than our body’s cells.
How much smaller?
Check out an e.coli bacterium versus our red blood cell.

19. EACH ONE a CELL… EACH ALIVE
UNICELLULAR
Bacteria are SINGLE-CELLED organisms that are smaller than our body’s cells.
How much smaller?
Check out an e.coli bacterium versus our red blood cell.
EACH ONE a CELL… EACH ALIVE

20. Earth has MILLIONS OF SPECIES of BACTERIA,
ONE GLASS of CLEAN, DRINKING WATER contains TEN MILLION HELPFUL BACTERIA!
These represent at least a COUPLE THOUSAND differernt SPECIES of bacteria. )

21. Earth has MILLIONS OF SPECIES of BACTERIA,
That slippery film
on the inside of an old
glass is mostly good
bacteria!
Earth has MILLIONS OF SPECIES of BACTERIA,
ONE GLASS of CLEAN, DRINKING WATER contains TEN MILLION HELPFUL BACTERIA!
These represent at least a COUPLE THOUSAND differernt SPECIES of bacteria. )

22. Of course, these bacteria can be pathogenic too…
THIS IS JUST A SHORT LIST OF DIFFERENT BACTERIA THAT CAN BE FOUND JUST IN THE HUMAN BOWEL SYSTEM THAT CAN BE HARMFUL.

23. Earth has MILLIONS OF SPECIES of bacteria,
BUT they come in ONLY A HANDFUL of SHAPES: )

24. How long have we had BACTERIA on EARTH???

25. How long have we had BACTERIA on EARTH???
How long have we had BACTERIA on EARTH???
Scientists at the University College London say they have discovered the remains of microorganisms in Quebec, Canada that are at least 3.77 billion years old. If they are proven to have a biological origin, they would be the oldest microfossils ever found.
The discovery comprises tiny filaments and tubes formed by bacteria that lived on iron, They were found in quartz layers in the Nuvvuagittuq Supracrustal Belt in Quebec, Canada, which contains some of the Earth's oldest known sedimentary rocks, it said.
"Our discovery supports the idea that life emerged from hot, seafloor vents shortly after planet Earth formed.“ --3/1/17

26. 3.7 out of 4.5 billion years our Earth has had BACTERIA!
ABSOLUTE, RADIOACTIVE DATING SHOW BACTERIA have been on Earth over 3.7 BILLION YEARS!! .
3.7 out of 4.5 billion years our Earth has had BACTERIA!

27. Bacteria are our most primitive life on our planet….
Bacteria are our most primitive life on our planet…
They’ve been on Earth for BILLIONS of years!
In contrast, HUMANS have been here only out of 4.5 billion years on Earth

28. BACTERIA: (3.7 / 4.5) x 100 = HUMANS: (0.0001 / 4.5) x 100 =
calcs out
If we EVER find life on other planets, it’s no wonder why scientists think it will be BACTERIAL.
BACTERIA: (3.7 / 4.5) x 100 =
HUMANS: ( / 4.5) x 100 =

29. If we EVER find life on other planets, it’s no wonder why scientists think it will be BACTERIAL.
BACTERIA: (3.7 / 4.5) x 100 = 82% of EARTH HISTORY
HUMANS: ( / 4.5) x 100 = 0.002% of EARTH HISTORY

30. Bacteria BY FAR are the most SUCCESSFUL LIFE on our planet….
No WAY we can stop them all!!
They’ve been on Earth for BILLIONS of years!
Why?

31. Bacteria BY FAR are the most SUCCESSFUL LIFE on our planet….
No WAY we can stop them all!!
They’ve been on Earth for BILLIONS of years!
Why?
IF WE TRY
TO STOP THEM,
WE LOSE!

32. Why are bacteria MOST SUCCESSFUL?

33. Under IDEAL conditions, bacteria can divide & split every 20 minutes!
It takes us til we are teenagers before we can get pregnant (please don’t).
And even then it takes 9 months for a baby to be born.

34. If you started with just 10 teeny microbe bacteria, and they split every 20 minutes, how many will you have in just 5 hours?
Time passed
# of bacteria
BEGIN 10
:20 20
:40 40
1 HOUR
1:20
1:40
2 HRS
2:20
2:40
3 HRS
3:20
3:40
4 HRS
4:20
4:40
5 HRS
5:20
5:40

35. If you started with just 10 teeny microbe bacteria, and they split every 20 minutes, how many will you have in just 5 hours?
Time passed
# of bacteria
BEGIN 10
:20 20
:40 40
1 HOUR 80
1:20
160
1:40
320
2 HRS
2:20
2:40
3 HRS
3:20
3:40
4 HRS
4:20
4:40
5 HRS
5:20
5:40

36. If you started with just 10 teeny microbe bacteria, and they split every 20 minutes, how many will you have in just 5 hours?
Time passed
# of bacteria
BEGIN 10
:20 20
:40 40
1 HOUR 80
1:20
160
1:40
320
2 HRS
640
2:20
1,280
2:40
2,560
3 HRS
3:20
3:40
4 HRS
4:20
4:40
5 HRS
5:20
5:40

37. If you started with just 10 teeny microbe bacteria, and they split every 20 minutes, how many will you have in just 5 hours?
Time passed
# of bacteria
BEGIN 10
:20 20
:40 40
1 HOUR 80
1:20
160
1:40
320
2 HRS
640
2:20
1,280
2:40
2,560
3 HRS
5,120
3:20
10,240
3:40
20,480
4 HRS
4:20
4:40
5 HRS
5:20
5:40

38. If you started with just 10 teeny microbe bacteria, and they split every 20 minutes, how many will you have in just 5 hours?
Time passed
# of bacteria
BEGIN 10
:20 20
:40 40
1 HOUR 80
1:20
160
1:40
320
2 HRS
640
2:20
1,280
2:40
2,560
3 HRS
5,120
3:20
10,240
3:40
20,480
4 HRS
40,960
4:20
81,920
4:40
163,840
5 HRS
327,680
5:20
5:40

39. In just 5 hours, 10 bacteria turned into over 300,000 micro-organisms
What did we get?
In just 5 hours, 10 bacteria turned into over 300,000 micro-organisms

40. How many bacteria can there be in 8 hours?
Time passed
# of bacteria
5 HOURS
327,680
5:20
5:40
6 HRS
6:20
6:40
7 HRS
7:20
7:40
8 HRS

41. How many bacteria can there be in 8 hours? OVER 167 MILLION!
Time passed
# of bacteria
5 HOURS
327,680
5:20
5:40
6 HRS
2,621,440
6:20
6:40
7 HRS
7:20
7:40
8 HRS
>167 MILLION

42. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly.

43. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly.
What does this look like on a graph?

44. Bacteria can split in 2 in as little as every 20 minutes!!!
Numb e r of b a c t i
1.1M
900K
700K
500K
300K
100K
1hr
2hrs
3hrs
4hrs
5 hrs
Time: every 20 minutes

45. It’s hard to make a graph BIG enough to show that much growth!!!
yikes
Numb e r of b a c t i
1.1M
900K
700K
500K
300K
100K
1hr
2hrs
3hrs
4hrs
5 hrs
Time: every 20 minutes

46. oh man, that’s crazy growth.

47. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly!
hey can survive almost anything!
HOW?

48. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly!
BINARY FISSION
ey can survive almost anything!

49. FISSION like when at ATOM splits in two!
They reproduce qui
BINARY FISSION
They can survive almost anything!

50. Bacteria split in two through BINARY fission.
y can survive almost anything!

51. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly.
BINARY FISSION-superfast asexual divide & split
They can survive almost anything!

52. Why is BACTERIA BINARY FISSION so much quicker than MITOSIS?
They reproduce quickly.
BINARY FISSION-superfast asexual reproduction
They can survive almost anything!
They have lots of species, each genetically different.
Some work with us!

53. Why is BACTERIA BINARY FISSION so much quicker than MITOSIS?
WHAT ARE BACTERIA MISSING?
They reproduce quickly.
BINARY FISSION-superfast asexual reproduction
They can survive almost anything!

54. Why is BACTERIA BINARY FISSION so much quicker than MITOSIS?
LOOK MA! NO NUCLEUS!
They reproduce quickly.
BINARY FISSION-superfast asexual reproduction
They can survive almost anything!

55. Why is BACTERIA BINARY FISSION so much quicker than our cells?
They reproduce quickly.
BINARY FISSION-superfast asexual reproduction
They can survive almost anything!
NO NUCLEUS!

56. PROkaryote cells have NO nucleus!
BACTERIA are PROkaryotic!

57. Why are bacteria MOST SUCCESSFUL?
They reproduce VERY quickly.
BINARY FISSION-superfast asexual divide & split
PROkaryote cell means NO NUCLEUS-NO MITOSIS.
They can survive almost anything!

58. bacteria growth worksheet…