You Are Given Four Test Tubes, Each Containing an Unknown

question 62

Multiple Choice

You are given four test tubes, each containing an unknown protist, and your task is to read the following description and match these four protists to the correct test tube.
When light, especially red and blue light, is shone on the tubes, oxygen bubbles accumulate on the inside of test tubes 1 and 2. Chemical analysis of test tube 1 indicates the presence of a chemical that is toxic to fish and humans. Chemical analysis of test tube 2 indicates the presence of substantial amounts of silica. Microscopic analysis of organisms in test tubes 1, 3, and 4 reveals the presence of permanent, membrane-bounded sacs just under the plasma membrane. Microscopic analysis of organisms in test tube 3 reveals the presence of an apicoplast in each. Microscopic analysis of the contents in test tube 4 reveals the presence of one large nucleus and one small nucleus in each organism.
Test tube 3 contains ________.

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

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Definitions:

Euphoria

A state of intense happiness and self-confidence.

Cognitive Dissonance

A psychological phenomenon where an individual experiences discomfort due to holding contradictory beliefs or values.

Emotional Excesses

Extreme expressions or experiences of emotions that are disproportionate to the situation or stimuli eliciting them.

Comorbidity

The presence of two or more diseases or medical conditions in a patient simultaneously.