Download Plant kingdom http://www.istockphoto.com/file_thumbview_approve

Plant kingdom
http://www.istockphoto.com/file_thumbview_approve/6143246/2
/istockphoto_6143246-chloroplasts.jpg
Plant kingdom
http://www.childrensmicroscopes.com/images/specimennew/022aab01022abc40x-onion-epidermis.jpg
Note the thick barrier between cells in all of these images of plant
cells. It is the cell wall.
Source for all photographs of cells belowe
http://www.ndpteachers.org/perit/biology_image_gallery1.htm
Plant root tip
Plant leaf
Water conducting tissue of bamboo, a plant
plantanatomy.org/biological-photographs.html
Mesophyll cells (photosynthetic cells) of a plant leaf
plant
wanimal—
note (e.g., in the circled area) that the intersection of cells is
sometimes difficult to distinquish: cell wall is not present.
_____ 40 µm fish blastocyst (early embryo), stained for DNA
http://slohs.slcusd.org/pages/teachers/bsmith/ZZ%20%20Folder/Ron%27
s%20Biology%20Web%20Page/Biology/Cells/onion3.jpg
Mammalian squamous epithelial cells
________ 70 µm
Amoeba -protist ____________________________200 microns
1 celled, no cell wall nucleus (animal like protists have no cell walls
but plant like protists usually do have cell walls); note vacuoles
(uneven granule like appearance) in the cytoplasm, containing food
that the amoeba ingested by phagocytosis.
Paramecium protist
1 celled, no cell wall nucleus (animal like protists have no cell walls but
plant like protists usually do have cell walls); note vacuoles (uneven
granule like appearance) in the cytoplasm, containing food that the
amoeba ingested by phagocytosis.
____________________________100 microns
1 celled, no cell wall nucleus (animal like protists have no cell walls
rat seminal tubules in presence of estrogen, bar = 50 microns
human kidney cells
http://www.ehponline.org/members/1999/107p397-405fisher/fisher-full.html
http://www.nature.com/ki/journal/v71/n5/thumbs/5002030f2th.jpg
note that it is not easy to distinguish boundaries between many of the cells (look
at cells comprising the tube), and nuclei are found in the cells. Also, cells are between about 10 and 30 um
Note that as the entire specimen is scanned, areas with different appearing cells are clearly evident.
This shows that the organism is multicellular and has specialized cell types.
www.siumed.edu/~dking2/erg/GI118b.htm
cross section of intestine in animal
_______ 50 um
Chinese hamster ovary cells
micro.magnet.fsu.edu/.../chocells.html
Note that these cells overlap are stacked haphazardly—an
indication that these cells have been “transformed” and are on the
way to becoming tumor forming cells (they are not obeying rules
to stop dividing when cells come into contact with the membranes
of adjacent cells). The cells are also very flat and irregular in
appearance versus the other cells of the same type (these are
clones of a single cell), another indication that the cell is abnormal.
Note that different regions have very distinct cell stains and cell
morphology (appearance), showing that the organism is multicellular and
specialized with regard to its cell types. The tiny purple spots above GI118
in the website address are nuclei in many adjacent cells.
___ 100 µm
The entire specimen is well over a mm in size—definitely visible to the
naked eye, so this is certainly MANY cells (multicellular).
Carolina biological, coccal (round shape)
Carolina biological,
http://www.hometrainingtools.com/pop_multi_view.asp?pn=MSBACTERA&pname=Bacteria+slide,+three+types,+smear
note the spiral shape (spirilla)
i
___10 microns Bacilli (rod shape) surrounded by eukaryotic cells—
note that the eukaryotic nuclei are alone much larger than the
bacteria. Also, note the difficulty in determining where the “edges”
of the eukaryotic cells are (hard to see the separation of the cells
housing adjacent nuclei, the dark purple spots). Note the nucleoli
in each nucleus (the darker purple spot in the nucleus).
Into what kingdom do you think the host cells ought be classified?
How do you recognized all of these as cells? The cells are smaller than 5
microns, whereas 7 microns is the lower size limit for a nucleus. Also, the
3 shapes are revealing.
www.gadgetscience.com/tag/science-project/
Note that the cells surrounding the bacteria are eukaryotic (clusters
of 4 or 5 cells, each with a nucleus) and are
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio
%20102/Bio%20102%20Laboratory/Fungi/Fungi.htm
High magnification staphylococcus bacteria
http://phil.cdc.gov/PHIL_Images/2296/2296_lores.jpg
Images below are fungi
plantclinic.cornell.edu/.../brownpatch.htm
Note the obvious barriers that mark the outer limits of the cells that form
the matted, string like body called a mycelium (see the dark brown rim
above and the dark purple rim in the photograph on the right). Also note
that there are few different types of cells, just the hyphae (string like cells
connected together to form the mucelium) In the photograph on the
right, also note the thick walled spores at the timps of some hyphae.
Nuclei are not stained in these cells, but they would be apparent if stained
or if the section was viewed at different depths.
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio
%20102/Bio%20102%20Laboratory/Fungi/Fungi.htm
____150 microns