Leona is making lemon pudding from "scratch." her ingredients include fat-free milk, corn starch, lemon juice, egg yolks, salt, sugar, and butter. when she added some of the ingredients together, little clumps formed in the mixture before she could heat it. what happened to those ingredients? a. the acid in the lemon juice denatured the milk proteins. b. the cholesterol in the raw egg yolks reacted with the butter. c. the salt activated the sugar after being mixed with the egg yolks.

The acid in the lemon juice denatured the milk proteins.

Explanation:

The important biomolecule of the living organism is protein. Proteins are made of the repeating units of the alpha amino acids that are attached together through the peptide bond.

The proteins get denatured if they are subjected to the change in the temperature conditions or the additions of the chemicals. The addition of the lemon juice that acts as the acid coagulates the protein present in the milk and results in the clump formation.

Thus, the correct answer is option (a).

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

a physical change is being made.