When you are measuring water in a graduated cylinder, the top section of the water will form a meniscus because of the between the water and the glass. 1 point
cohesion
adhesion
ionic bonds
van der Waals forces

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different