Ascientist took a sample of enzymes from cow saliva and mixed them with a form of starch found in grains. after a while the starch broke into many smaller molecules. this shows that question 2 options: cows should not be fed grains. cows do not use the food that they eat. cows break down the food that they eat. grains are made of enzymes.

The answer is cows break down the food that they eat

Explanation:

Organisms, such as cows, that eat plants or animals break down the food they have eaten using acids and digestive enzymes. The broken down food is used by their bodies to produce building materials and the energy that they need to survive.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.