BACTERIA
-
Upload
dolan-blanchard -
Category
Documents
-
view
18 -
download
0
description
Transcript of BACTERIA
![Page 1: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/1.jpg)
Maria Egidos
BACTERIA
Source:Bacteria.wikipedia,the free encyclopedia
![Page 2: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/2.jpg)
Maria Egidos
Are bacteria larger or smaller than eukaryotic
cells?
smaller!
![Page 3: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/3.jpg)
Maria Egidos
Which is the bacteria, E.coli or Paramecium?
Look at these photos and say which cell is larger. Notice the scale.
2 µm 50 µm
E.coli Paramecium sp
E. coli Why?
Pictures source: oldearth.wordpress.com/microbios-en-accion;www5.pbrc.hawaii.edu/microangela/param.htm
![Page 4: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/4.jpg)
Maria Egidos
And now, which cell is larger? Notice the scale.
2 µm 2 µm
Eukaryotic cell Prokaryotic cell
Pictures source:Bacteria.wikipedia,the free encyclopedia;www.biochemistry.blogspot.com
![Page 5: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/5.jpg)
Maria Egidos
How many times smaller is this
bacterium than the eukaryotic cell?
Source:www.star.ucl.ac.uk
![Page 6: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/6.jpg)
Maria Egidos
So, one difference between bacteria and eukaryotic cells is size:
Cell Size
Bacteria Eukaryota
smallerlarger
More differences? Yes, the nucleus!
![Page 7: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/7.jpg)
Maria Egidos
Bacteria have prokaryotic cells. This meansthat they don't have nuclear membrane.
Prokaryotic cell Eukaryotic cell DNA
nuclear membrane
2 µm2 µm
Pictures source:Bacteria.wikipedia,the free encyclopedia;www.biochemistry.blogspot.com
![Page 8: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/8.jpg)
Maria Egidos
So, what is the difference between prokaryotic and eukaryotic cells?
Cell Size Nucleus
Prokaryotic
Eukaryotic
Small
Big
No nuclear membrane
Nuclear membrane
More differences? Yes, the complexity.
![Page 9: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/9.jpg)
Maria Egidos
Look inside of these cells. Which is more complex?
2 µm 2 µm
Photo source: wikipedia, the free encyclopedia
![Page 10: BACTERIA](https://reader036.fdocuments.us/reader036/viewer/2022072013/56812bd0550346895d902fdf/html5/thumbnails/10.jpg)
Maria Egidos
Then, the differences between prokaryotic and eukaryotic cells are:
Cell
Prokaryotic
Eukaryotic
? ?Size? Nucleus Complexity