Which phrase best describes the process of crossing over? a. pairs of homologous chromosomes exchange segments
b. pairs of sister chromatids exchange segments
c. pairs of homologous chromosomes become linked
d. pairs of sister chromatids become linked

c is the answer. hope this

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!