Which statement best describes a physical change? changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same. changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same. changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same. changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.

Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.

Explanation: Physical change is a change in which there is no change in the chemical arrangement and thus there is no redistribution of atoms. No new substances are formed. There is only change in size, shape and phase etc.

Chemical change is a change in which there is change in the chemical arrangement and thus there is  redistribution of atoms. which leads to formation of new substances.

cell regulation is conducted by special proteins.

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.