Which describes a feature of the physical properties of all substances? A) Can dissolve in water. B) Can conduct heat and electricity. C) Rearranges atoms to form new substances. D) Does not change the identity of a substance.

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.

Which process moves molecules and has these traits? -moves from high concentration to low concentration -moves from uneven distribution to even distribution -can occur when there is no membrane o o active transport in a cell diffusion osmosis o passive transport in a cell

What name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna?