Anatomical Position and Directional Terminology Complete each of the following statements by filling in the blank with the correct directional term

1. The nose is to the chin

2. The trachea isto the spinal cord

3. The elbow is to the wrist

4. The lungs are
to the heart.

5. The skin is
to the muscle.

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i believe the answer would be b. hope it : )

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.