A patient has a catheter in his urinary tract. The catheter becomes colonized with bacteria and a biofilm forms. What triggered biofilm formation?

The model organism Escherichia coli is growing in a nutrient rich environment. If glucose is depleted, what would be the first response of Escherichia coli to the change in the environment?

The model organism Escherichia coli is growing in a nutrient rich environment. If glucose is depleted, what would be the first response of Escherichia coli to the change in the environment?

A mouse raised in a germ free environment completely lacks any “normal microbiota” or bacterial community. Aside from stimulation of the immune system, how would this affect the mouse’s ability to resist disease-causing organisms:

If bacterial cells are exposed to an antibiotic for the first time, they will:

For a gene that is only regulated by a repressor, a mutation that destroys the activity of the repressor would:

If bacterial cells are exposed to an antibiotic for the first time, they will:

For a gene that is only regulated by a repressor, a mutation that destroys the activity of the repressor would:

In order to produce mature viral particles after entering a eukaryotic host cell, a negative (noncoding) strand RNA virus replicates its genome using a:

Examine the graph, shown above, depicting a bacterium’s growth rate at different temperatures. If the bacterium is shifted from 30°C to 40°C, it will: