In Test Tube 1, You Observe an Organism Feeding

question 14

Multiple Choice

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 tubes 2, 4, and 5 reveals the presence of permanent, membrane-bounded sacs just under the plasma membrane. Microscopic analysis of organisms in tube 4 reveals the presence of an apicoplast in each. Microscopic analysis of the contents in tube 5 reveals the presence of one large nucleus and several small nuclei in each organism.

Figure 28.1 You are given five test tubes, each containing an unknown protist, and your task is to read the description below and match these five protists to the correct test tube.
-Test tube 1 contains

• A)Paramecium
• B)Navicula (diatom)
• C)Pfiesteria (dinoflagellate)
• D)Entamoeba
• E)Plasmodium

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Definitions:

Cannon-Bard Theory

A theory in psychology suggesting that emotional experiences occur simultaneously with physiological responses, rather than one causing the other.

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Subjective Experience

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