The best answer is B - Proteins.
Proteins make up enzymes, or to put it another way enzymes are made up of protein. It is enzymes that speed up the chemical reactions. Enzymes are organic catalysts, substances that speed up a (biochemical) reaction but do not take part in the reaction and remain unchanged at the end of the reaction.
In man, there are many enzymes. The majority of these are found in the digestive system where they greatly aid the process of food breakdown from complex molecules to simple molecules. Examples include salivary amylase found in saliva, which begins the gradual breaking down of starch into glucose right from the moment food is placed in the mouth and mixed with saliva. Pepsin in the stomach breaks down protein.
Explanation:
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<h2><u>Answer:</u></h2>
In the 1950's, natural chemists Stanley Miller and Harold Urey, led a test which exhibited that few natural mixes could be shaped suddenly by reenacting the states of Earth's initial climate. In the wake of enabling the examination to keep running for multi week, they broke down the substance of the fluid pool.
The Miller– Urey trial (or Miller analyze) was a concoction explore that mimicked the conditions thought at an opportunity to be available on the early Earth, and tried the compound beginning of life under those conditions.
