Post-Lab 7 Microbiology

The generation of cellular energy, ATP, can have metabolic reaction that require a particular amount of which physical property?

oxygen levels

Microbes that can only grow when oxygen is not present are

obligates anaerobes

When using a fluid thioglycollate media which type of bacteria would be present at the bottom of the media?

obligates anaerobes

Which bacteria have optimal growth between 45ºC to 75ºC?

hyperthemophies

When the temperature increases past the optimal, these denature.

enzymes

When the temperature increases past the optimal, lipids can be destroyed affecting which structure?

cell membranes

When the temperature increases past the optimal, the hydrogen bonding in the RNA breaks down and the proteins denature in this structure.

ribosomes

A bacterium that grows at a pH of 4 is a

acidophiles

An environment that has more solutes than a cell is

hypertonic

These microbes require a high concentration of sodium chloride in order to grow.

obligate halophiles