Organisms with a Circulating Body Fluid That Is Distinct from the Fluid

question 8

Multiple Choice

Organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells are likely to have

• A) an open circulatory system.
• B) a closed circulatory system.
• C) a gastrovascular cavity.
• D) branched tracheae.
• E) hemolymph.

---

Definitions:

Ester

Organic compounds formed by the reaction of an acid (usually carboxylic acid) with an alcohol, characterized by the functional group -COO-.

Williamson Ether Synthesis

A chemical reaction that synthesizes ethers from alkyl halides and alcohols using a strong base.

Mechanism

A detailed explanation of the step-by-step process by which a chemical reaction occurs.

E2

A bimolecular elimination reaction mechanism where a substrate eliminates two substituents forming a double bond, with the departure of a leaving group and loss of a proton.