Why do living things use enzymes instead of heat as a source of activation energy? o adding sufficient heat would harm or kill a living thing. o adding heat would not give the reactants enough energy. o adding heat gives reactants the wrong kind of energy. o adding heat does not affect how chemical reactions take place.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive

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!