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Describe the structure of DNA
Two long strands wrapped around each other to form a double helix. Looks like a twisted ladder and each strand is composed of many nucleotides. Each neucleotide is made of a sugar, phosphate and a base. There are four different bases; adenine, thymine, cytocine, guanine. Watson & Crick
This virus is spread by inhalation of dried urine from infected rodents
HantaVirus Pulmonary Syndrome
This phase of cellular respiration takes place in the prokaryotic cell membrane
Electron Trasport chain in cell wall
These organisms require oxygen at a lower concentration than found in the atmosphere
These are catalase negative organisms
anaerobes and aerotolerant bacteria such streptococcus and entercoccus
Which bacteria are used to test the effectiveness of disinfectants?
Salmonella, Staphylococcus, Pseudomonos
What is ethylene oxide? How is it used?
It is a gas used to kill all microbes and endospores but requires lengthy exposure times. It is highly penetrable and effective for use in steriliztion. Used to sterilize petree dishes.
What is the difference between competitive and noncompetitive enzyme inhibition?
Competive fills the active site of an enzyme substrate and competes with the normal substrate for the active site. Noncompetitive (allosteric inhibition) interacts with another site (allosteric site) of the enzyme site. This interaction causes the active site to change shape making it nonfunctional.
What is the most severe type of Hepatitus? Has the highest mortality rate?
Hepatitus D; cannot have Hep D without having Hep B.
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