Why Is an Open Circulatory System Less Efficient Than a Closed

question 1

Multiple Choice

Why is an open circulatory system less efficient than a closed circulatory system?

• A)Metabolic wastes cannot be removed from tissues in an open circulatory system.
• B)There is no heart to pump the blood in an open circulatory system.
• C)It is more difficult to quickly deliver O₂ to specific tissues when needed with an open circulatory system.
• D)Open circulatory systems lack respiratory pigments that bind to oxygen.

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Definitions:

Catalyst

A substance that increases the rate of a chemical reaction without being consumed in the reaction, often used in industrial processes to enhance efficiency and specificity.

Activation

The process of making something active or operative, often referring to the initiation of a chemical reaction or the stimulation of a biological process.

Activation Energy Barrier

The minimum amount of energy required for reactants to transform into products in a chemical reaction.

Catalyst

A material that accelerates a chemical reaction's speed without any lasting alteration to its own chemical structure.