Are similar to basophils, but reside in tissues rather than circulating in the blood.

The correct answer is mast cells.

Explanation:

Mastocyte also is known as a mast cell refers to a migrant cell of connective tissue, which comprises various granules high in heparin and histamine. Mainly it is a kind of granulocyte obtained from the myeloid stem cell, which is a component of the neuroimmune and immune systems. These cells are similar to basophils, however, they are found within the tissues rather than circulating in the blood.

the answer you are looking for is the united states forest service.

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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.