When performing a routine phlebotomy, the most common gauge needle is?

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

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane