Question

Methods of preservation of bacterial culture liquid nitrogen

Answer 1

Answer:

HERE'S THE ANSWER IN THE FOLLOWING IMAGE.

Answer 2

Answer:

There are two basic approaches to slowing the rate of deleterious reactions in a culture of bacteria.  The first is to lower the temperature which decreases the rate of all chemical reactions.  This can be done using refrigerators, mechanical freezers, and liquid nitrogen freezers.  The second option is to remove water from the culture, a process which can be tricky and involves sublimation of water using a lyophilizer.