Cells Lab Ch. 7

A tour of various eukaryotic and A tour of various eukaryotic and prokaryotic cellsprokaryotic cells

Human Cheek Cell

Squamous cell Squamous cell epitheliumepithelium

A human cheek cellA human cheek cell EukaryoticEukaryotic Obvious nucleiObvious nuclei Cell MembraneCell Membrane CytoplasmCytoplasm

Frog’s Blood

Both red cells Both red cells (erythrocytes) & white (erythrocytes) & white cells (leukocytes)cells (leukocytes)

Frog red cells have a Frog red cells have a nucleusnucleus

White cells are dark White cells are dark purple stainingpurple staining

Human Blood

Notice human red Notice human red blood cells have no blood cells have no nucleusnucleus

White cells are purple White cells are purple stained. Notice the stained. Notice the difference in the shape difference in the shape of white cell nucleiof white cell nuclei

Onion Cell 100x

Notice obvious cell Notice obvious cell wallwall

Notice obvious Notice obvious nucleusnucleus

Plant cells have a cell Plant cells have a cell membrane interior to membrane interior to cell wall (cellulose)cell wall (cellulose)

Onion Cell 400x (notice nuclei)

Elodea Wet Mount

Notice the obvious Notice the obvious cell wallscell walls

Notice the green Notice the green chloroplastschloroplasts

Most slides show Most slides show multiple cell layersmultiple cell layers

Elodea Wet Mount

Regular repeating Regular repeating structure/arrangement structure/arrangement of plant cell wallsof plant cell walls

Elodea Wet Mount

Bacteria Slide 400x (gram stain)

Bacteria are extremely Bacteria are extremely smallsmall

Bacteria are Bacteria are prokaryotesprokaryotes

Bacteria lack Bacteria lack membrane bound membrane bound organelles & nucleusorganelles & nucleus

Bacteria multiply Bacteria multiply rapidlyrapidly