Some Protozoa have cell structures that are formed as temporary
extensions of the cell membrane, allowing the cell to move around
using "false-feet" and to catch and engulf food. These extensions
are called _________.
Which one of the following groups include organisms that have
cell walls made of silica and whose fossilized forms are used as
abrasives in toothpaste and polishes?
Dinoflagellates are best described as ________.
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mostly marine algae that can produce harmful Red Tides, Yellow
Tides, and Brown Tides. |
|
protozoans that use cilia to move and feed. |
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protozoans that live in the guts of termites. |
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large, multicellular algae that resemble plants but do not have
true leaves, stems, or roots. |
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parasitic protozoans that must spend part of their life cycles
in vertebrate hosts. |
_________ are probably the ancestors of modern day terrestrial
plants.
The first multicellular Eukaryotes which lived on land appeared
in the fossil record about _______ years ago.
|
50 million
The ability to release digestive enzymes to the outside of a
cell, break down whatever substrate that is affected, and then
reabsorb the nutrition back through a Cell Wall into the organism
is called being ____________.
Which group of Protists consume CO2 and produce
O2 for much of Earth, serving as the base of food webs
in lakes, streams, and the oceans?
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