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Anacharis
(Elodea) leaf cells x1000. This plant is
sold in pet stores for use in home fish aquaria. Green chloroplasts
appear mottled because of their internal grana. In this specimen you
can see a nucleus and nucleolus, something not often seen in such
cells.
Human cheek cell
x1000. The nucleus of this very flat cell is easily seen. The cells
have been stained with to make then easier to see.
Onion
epidermis x100. Each cell has a nucleus. The specimen has
been stained with gram iodine to give the nuclei more contrast.
Potato cells
with stained leucoplasts x100. The leucoplasts have been
stained with gram iodine. The resulting purple, blue, or black color is
chemical proof that leucoplasts are made of starch.
Leucoplasts
x1000. These are unstained leucoplasts in potato cells.
