Aplant celll is placed into distilled water ,it doesn't burst . which of the following explains this?
a) restricts entry of water
b) water moves out of cell
c) vacuole store excess water
d) its protected by cell wall

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Which element is least likely to undergo a chemical reaction