Why is it important to chill the gelatin hydrolysis test stabs before determining if your bacteria contain gelatinase

How do adaptation affect a species?

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?