Question

define passive transfer ?​

Answer 1

Passive transport is a movement of ions 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.

Hope this is the answer to your question.

Answer 2

Answer:

It is the transfer of skin sensitivity from an allergic to a normal person by injection of serum from the former that is used especially for identifying specific allergens when a high degree of allergic sensitivity is suspected