Which Feature Does Not Characterize a Protonephridium

question 176

Multiple Choice

Which feature does not characterize a protonephridium?

• A) It consists of a flame cell and a tubule.
• B) Cells of its tubule modify the composition of the filtrate.
• C) It produces urine that is less concentrated than extracellular fluid.
• D) The filtrate it produces flows toward the excretory pore.
• E) It relies on blood pressure to drive filtration.

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Definitions:

Common Stock

A type of security that represents ownership in a corporation, giving shareholders voting rights and potential dividends.

Bid-Ask Spread

The difference between the highest price that a buyer is willing to pay (bid) for an asset and the lowest price that a seller is willing to accept (ask).

Dealer

An individual or firm in the financial services industry who buys and sells securities for their own account, whether through a broker or otherwise.

Buy and Sell

The basic actions in trading and investing where "buy" refers to acquiring an asset, and "sell" indicates disposing of an asset.