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Botany Cells
this will consist of lab questions and possible quiz practice
20
Biology
Undergraduate 3
09/30/2012

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Cards

Term
How many layers of cells are there in an Elodea leaf?
Definition
2 or 3
Term
How should a coverslip be applied to a drop of liquid on a microscope slide?
Definition

45º angle

Term
When chloroplasts appear to be moving within a living cell, what is the cause of their movement called?
Definition
cyclosis
Term
In most living cells, such as those of Elodea, where is the cytoplasm located? How extensive are plant cell vacuoles?
Definition
Along the edges of the cell, with the greater portion (up to 90%) of volume occupied by one or two central vacuoles
Term
What are cytoplasmic bridges?
Definition
Narrow stretches of cytoplasm that criss-cross the central vacuole
Term
What parts of cells are normally visible with the aid of a compound light microscope?
Definition
Nucleaus, nucleolus, chloroplast, chromoplasts, other plastids, cell wall, (mitochondria are barely visible in good light microscopes)
Term
If present in a cell, where are anthocyanin pigments located?
Definition
In the cell sap within vacuoles, gives red, blue or purple color to flowers and some leaves
Term
How are strach grains distringuished from parenchyma cells in a potato
Definition
Grains are located within cells, may exhibit concentric rings, often several are located within a given cell. Will stain darkly with iodine.
Term
What are striae, and where are they located in a spiderwort stamen hair cell?
Definition
Fine lines that are roughly parallel and are located on the cell surface
Term
How does a chromoplast differ from a chloroplasts?
Definition
Primarily by the green color of chlorophyll in the chloroplasts. (they are/can be of similar size though)
Term
In what part of a cell are chloroplasts located
Definition
cytoplasm
Term
What is cyclosis?
Definition
Cytoplasmic streaming, the movement of the cytoplasm and inclusions in it
Term
What is a vacuole? What is the thin boundary of the vacuole called? Is it visible?
Definition
Enclosed chamber within the cell. The boundary is a vacuolar membrane (tonoplast) that is generally not directly visible in light microspes.
Term
Where would you look for the nucleaus in an Elodea cell?
Definition
Along the edge of cell or nestled in a corner, they tend to be grayish, oblong, and large (relitive to other cell structures)
Term
Anthocyanin pigments and chromoplasts may both be red in color. If you were to observe a cell that had both, how could you distinguish between them?
Definition
The anthocyanin pigments are water soluble; while the contents of the chromoplasts tend to be lipid soluble.
Term
How can you tell a potato strach grain from a cell?
Definition
No cell well, several grains ware often found in each cell
Term
How would you distinguish a strach grain from a chloroplast?
Definition
Chloroplast will be green and have a fairly regular oval shape
Term
What is a cytoplasmic bridge?
Definition
Narrow strands of cytoplasm that tend to criss-cross the central vacuoles
Term
Specifically where do strach grains develop in a cell?
Definition
Inside leucoplasts (membrane bound plastids, especially amyloplastids), on pyrenoids of larger chloroplasts
Term
Where would you expect to find a nucleolus?
Definition
Inside the nucleus, often appears to be a darker region within it
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