Microorganisms
Volvox
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Found in ponds
Member of a group called green algae
No roots, stems, or leaves
Uses light to make food
Live in water or damp surfaces
Cells live in colonies of 1,000 to 3,000 cells arranged in a hollow sphere
Each one has two flagella—a whiplike tail that helps them move
The colony is held together by a clear jellylike substance
Some large colonies contain daughter colonies; these are released
from the parent when they become big enough
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Benefit of living in a colony—protected from outside predators
that are larger
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It is a BRIGHT GREEN
Blepharisma
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Found in ponds
Single-celled and pear-shaped
About 160 micrometers
Rosy colored
It eats bacteria & other microbes; sometimes they eat each
other=cannibals
6. Belongs to a group called ciliates=body is covered with short,
moveable, hairlike extensions called cilia which act like paddles to
move
7. Reproduces by dividing itself in half to produce 2 equal halves; this is
called binary fission
Vinegar Eels
1. a harmless roundworm about 1.5 to 2 mm long with points at both ends
2. smooth, slender, almost transparent body
3. Made up of many cells
4. Large enough to be seen without a microscope
5. One of the lowest animals to have a digestive system
6. The embryos develop in the female and are born alive and wiggling
7. Can live in a very acidic environment
8. Live in unpasteurized cider vinegar
9. Eat bacteria and apple
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Pasteurization is a process of heating a liquid at a high
temperature to destroy microbes and produce a sterilized liquid
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Whole body has muscles that help them move very rapidly
Topics to study for the
Microworlds Test
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Microorganisms (Volvox, Blepharisma, & Vinegar Eels)
Two properties of Magnifiers (transparent & curved
Be able to draw a convex lens
Definitions
o Magnification- how many times something is made to look
bigger compared to its real size
o Transparent-clear; it can be seen through
o Convex-curved outwardly
o Nucleus-the control center of a cell
o Cell wall-found only in plant cells; protects the cells
o Observations- Information that you gather by using your five
senses
o Protoplasm-clear liquid inside a cell
o Inference-a conclusion based on observation
o Cell-the smallest whole parts of living things
o Cilia-short, movable, hair-like extensions that act like
paddles to move
o Properties-observable characteristics of an object
o Microscope-instrument with a lens or lenses used to make
objects look bigger
o Bacteria
o Blepharisma
o Volvox
o Vinegar eel