Growth requirements
These are the four basic groups by which organisms are categorized based on their carbon and energy sources.
What are photoautotrophs, chemoautotrophs, photoheterotrophs, and chemoheterotrophs?
This is a group of bacteria that is visible on the surface of solid media.
What is a colony?
Most unicellular microorganisms reproduce this way, a process in which a cell grows to twice its normal size and divides in half to produce two daughter cells of equal size.
What is Binary Fission?
This Category of organism acquires both energy and carbon from complex organic compounds.
What are Chemoheterotrophs?
This process is repeated to establish a series of dilutions.
What is Pour Plate Technique?
The time required for a bacterial cell to grow and divide.
What is generation time?
Oxygen is a deadly poison for this type of microorganism.
What are obligate anaerobes?
This is a defined medium (also called a synthetic medium).
What is, one in which the EXACT chemical composition is known?
This type of microorganisms reproduce by binary fission.
What is a unicellular microorganism?
This is the process by which nitrogen gas is reduced to ammonia.
What is nitrogen fixation?
This typically contains substances that either favor the growth of particular microorganisms or inhibit the growth of unwanted ones.
What is, Selective Media?
These are the four phases of the bacterial growth curve.
What is lag phase, log phase, stationary phase, death phase?
This is the name of a slimy community of microbes growing on a surface (ie dental plaque and soap scum).
What is a biofilm?
This is a common medium, which contains powdered beef extract and peptones (short chains of amino acids produced by enzymatic digestion of protein) dissolved in water.
What is Nutrient Broth?
This form of direct measurement uses statistical estimation to estimate the number of microbes in a sample.
What is Most probable number (MPN)?