For each of the following stressful environments, state what molecular stress the bacteria will face, and what action bacterial cells can take to cope with the stress.

A. A bacterium is placed in a hypertonic environment
B. A bacterium is placed in a hypotonic environment
C. A bacterium growing at 37 degrees C is suddenly shifted to 45 degrees C
D. A bacterium growing at 37 degrees C is suddenly shifted to 20 degrees C
E. A bacterium growing in an enriched medium is suddenly shifted to a minimal medium