Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN: 9781285866932
Author: Lauralee Sherwood
Publisher: Cengage Learning
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Transcribed Image Text:You are given five test tubes, each containing an unknown protist, and your task is to read the following
description and match these five protists to the correct test tube.
In test tube 1, you observe an organism feeding. Your sketch of the organism looks very similar to Figure 28.1.
When light, especially red and blue light, is shone on the tubes, oxygen bubbles accumulate on the inside of
test tubes 2 and 3. Chemical analysis of test tube 3 indicates the presence of substantial amounts of silica.
Chemical analysis of test tube 2 indicates the presence of a chemical that is toxic to fish and humans.
Microscopic analysis of organisms in test tubes 2, 4, and 5 reveals the presence of permanent, membrane-
bounded sacs just under the plasma membrane. Microscopic analysis of organisms in test tube 4 reveals the
presence of an apicoplast in each. Microscopic analysis of the contents in test tube 5 reveals the presence of
one large nucleus and several small nuclei in each organism.
Figure 28.1
Test tube 3 contains
Select one:
A.
Entamoeba.
B.
Pfiesteria (dinoflagellate).
Paramecium.
D.
Navicula (diatom).
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Transcribed Image Text:Figure 28.1
Test tube 3 contains
Select one:
А.
Entamoeba.
В.
Pfiesteria (dinoflagellate).
С.
Paramecium.
D.
Navicula (diatom).
Е.
Plasmodium.
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