Automatic Doors Require a Motor That Pushes a Rod That

question 178

Multiple Choice

Automatic doors require a motor that pushes a rod that opens the door; the door is held in place by a hinge and a doorframe, and a separate controller pulls the door back to the closed position.The rod pushing open the doorframe is most analogous to

• A) tendons.
• B) ligaments.
• C) extensors.
• D) flexors.
• E) cartilage.

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Definitions:

Trophic Levels

The levels in an ecosystem, representing a step in the food chain or food web, characterized by organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.

Natural Food Chains

A sequence of organisms each dependent on the next as a source of food, demonstrating the flow of energy and nutrients in an ecosystem.

Conversion Efficiency

A measure of how effectively a system converts input energy into output energy or work.

Food Pyramid

A visual representation to illustrate the recommended balance of different food groups in a healthy diet.