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You Are Given Four Test Tubes, Each Containing an Unknown

question 31

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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 1 contains ________.


Definitions:

Intercostal Space

The physical space between two ribs, which contains muscles, nerves, arteries, and veins.

Middle of the Armpit

The central region within the armpit area, anatomically known as the axilla.

Electrocardiograph

An instrument that measures and displays the waves of electrical impulses responsible for the cardiac cycle.

Cardiac Cycle

The sequence of contraction and relaxation that makes up a complete heartbeat.

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