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Metric, Microscope and Cell Structure
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Mega (M)
10
9
Kilo (k)
10
3
Deca (da)
10
1
Deci (d)
10
-1
Centi (c)
10
-2
Milli (m)
10
-3
Micro (μ)
10
-6
Nano (n)
10
-9
When converting from a small to a larger quantity, or from a large to a smaller quantity, what do we do to the decimal place?
Small to Large = Move it to the Right
Large to Small = Move it to the Left
How do you find the true magnification of a microscope?
Multiply the magnification of the objective and ocular lenses.
Magnification of Microscope Lenses
Objective
Ocular Lens
Objective Lens
Total Magnification
Scanning
Power 4x 10x 40x
Lower
Power 10x 10x 100x
High
Power 40x 10x 400x
Oil
Immersion 100x 10x 1000x
Animal vs. Plant cells
1) Animal cells have a plasma membrane while plant cells have a cell wall.
2) Plant cells have chloroplasts to obtain energy from the sun while animal
cells do not.
3) Plant cells are rigidly stacked together while animal cells do not have a
high level of organization.
Isotonic
Same amount of solutes inside and outside of the plasma
membrane. The potato remains the same as before it was placed in solution.
Hypotonic
More solutes inside membrane, water rushes in to equilibrate
concentrations and the cell swells. In our case, the potato becomes very
rigid from higher water concentration.
Hypertonic
More solutes outside the membrane, water rushes out to
equilibrate concentrations and cell shrivels. The potato becomes very flaccid
and weak.
Author
faustojpb
ID
1955
Card Set
Metric, Microscope and Cell Structure
Description
Metric System
Updated
2009-12-01T04:08:40Z
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