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Unicellular organisms and some small metazoans have cardiovascular systems.
False
EL-Shenawy Diffusion is the primary method used for transporting molecules in unicellular organisms and some small metazoans.
True
Large metazoans always have cardiovascular systems to transport molecules.
False
Diffusion is a reliable method for transporting molecules over long distances.
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Unicellular organisms and some small metazoans utilize active transport instead of diffusion to move molecules.
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Bulk flow is controlled by one-way valves to ensure bidirectional flow through the system.
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Increased pressure in the system leads to a decrease in flow.
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One-way valves in the system allow for reverse flow under high pressure conditions.
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Bulk flow is the primary method for transporting molecules in small metazoans.
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Circulation time in the system decreases with an increase in pressure.
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