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You Are Given Four Test Tubes, Each Containing an Unknown

question 62

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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 3 contains ________.


Definitions:

Interest Days

The number of days over which interest is calculated on a loan or financial instrument.

Coupon Bond

A type of bond that pays the holder interest at a fixed rate, typically semi-annually, until maturity when the face value is repaid.

Ask Price

The lowest price at which a seller is willing to sell a financial asset, commodity, or currency in the market at a particular time.

Accrued Interest

Accrued interest is the interest that has been earned but not yet received or paid, accumulating on bonds and loans from one payment period to the next.

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