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Know some basic points of physical control agents, chemical control agents, and mechanical control agents (why are they regarded as such?).What is a bacteriostat and bacteriocide/germicide?Understand the "degree" of resistance from spores to vegetative cells.Know the terms sterilization, disinfect, sanitization, degermination, and antisepsis.Be familiar with the factors that can influence the effectiveness of a cleaning agent.What are the four "modes of action" of control agents and name one agent for each mode?Know the difference in action of moist heat and dry heat.Describe briefly steam and pressure (autoclave), tyndilization, pasteurization, and boiling water.What is ionization radiation and give some examples?What is an example of non-ionization radiation?What is the mode of action for filtration?How do the following chemical control agents work?Halogens - disrupt sulfhydryl groups
Phenolics - disrupts cell walls
Peroxide - free-radical formation
Degergents & Soaps - disrupts cell membranes
Heavy metals - disrupts enzyme function/inactivates proteins
Aldehydes - cross links proteins/inactivates proteins
Gases - alters DNA
Persons who drink sufficient amounts of alcohol show rapid changes in central nervous system function, including both motor and behavioral changes,
Determine some of the differences that sun and shade leaves share? What does this say about the adaptations they've made to survive intheir respective environments?
Determine how to calculate osmolality for an electrolyte versus nonelectrolytes and molality versus osmolality.
Thirteen-year-old Ryan has begun to challenge many of his parents' values and to express his own set of highly idealistic standards. Compare and contrast the explanations for Ryan's behaviour that would be given by Kohlberg and by Erikson.
A population of mice can have either black (B) or white (b) fur and long (L) or short (l) tails. Suppose if this is the gamete pool for the parental generation, what is the expected frequency of B/l:b/l zygotes in the next generation,
Phenylketonuria is a severe form of mental retardation caused by a recessive allele. The situation affects about 1 in 25,000 newborn babies.
North American supply of salmon has not increased. Freeing up these rivers to allow more wild salmon to propagate will increase U.S. exports which are very good for our economy.
While you measure the genotype frequencies of the population you get the following data. What will the frequency of Aa be in the next generation.
We sometimes discover nematodes of unknown species in the digestive tract of bluegill that we dissect. Are these worms parasites or commensals?
Earlier in 2010, the Pacific island nation of Samoa decided to switch from driving on the right to driving on the left. Why may these cause difficulties? Why is it complicated for a cell to change codon usage, say, switching a "stop" codon to a trypt..
Contained is a description of the signaling cascade that results from EGF stimulation of the Ras-MAPK pathway in cells.
Explain the term "ecotype" and the significanace relative to revegatation of an are that has been burned?
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