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Which of the following is a correct example of binomial nomenclature?
Streptococcus pyogenes (italized)
Who provided a method of demonstrating that a microorganism could be responsible for a particular disease? His/Her name is associated with a series of 'postulates'.
We generally refer to microorganisms using binomial nomenclature. These names generally have two parts which refer to the..
Genus and Species
In Figure 1 (next page), what is the total magnification of bacteria if you used the 100x objective and eyepiece of 10x?
Look at figure 2, above. This shows the structure of , which is a thin structure lying inside the cell wall and enclosing the cytoplasm of the cell. It consists primarily of phospholipids and proteins
Look at figure 2, above. The phospholipid and protein molecules in the structure are not static but move freely in the structure surface. The structure must be as viscous as olive oil, so the proteins can move freely enough to function without destroying the structure. This arrangement of phospholipids and proteins is referred to as the ?
Fluid mosaic model
The , is also known as the capsule, slime layer, or extracellular polysaccharide, is a polysaccharide and/or polypeptide outside the cell
In Figure 3, which diagram represents a Gram negative cell wall?
A the one with the smaller peptidoglycan wall
What is a competitive inhibitor?
A molecule that competes with the proper substrate for the active site
To what does the 'optimum temperature' of an enzyme refer?
The temperature at which the enzyme functions fastest
Bacteria are separated on the basis of the Gram Stain. Which of these is NOT a possible response in Gram Stain?
Stapylococcus aureus, an important member of the human micro biome, forms characteristic morphologies which are:
Yellow colonies, Gram positive 'grape like clusters
Which of the following statements about endospores is are true?
Endospore allow a cell to survive poor environmental conditions
The three principle stages of cellular respiration are?
Glycolysis, Kreb's cycle, electron transport chain (or system)
How might primitive civilizations have preserved food by a method that relies on osmotic pressure?
Use of high salt concentration
Which group of molecules contains all of the following: Carbon, hydrogen, oxygen, nitrogen, sulfur
How might we remove dissolved 02 from a liquid?
Sparge (bubble) with nitrogen gas, Boil it, Add thioglycolate
Allow growth of fewer microbes that would grow on a general medium, Use specific chemical, pH, or salinity, Can be brought pre-prepared or produced in the lab, Are often used in clinical microbiology
In microbiological context, a colony is:
A population of cells arising from a single cell or spore, or from a group of attached cells
The 'generation time' refers to:
The time required for a cell to divide and the population to numerically double
When measuring bacterial growth, measurement of which of these are directed methods:
Turbidity, Dry weight, Metabolic activity
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