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reaction rate The change in concentration of a reactant or product per unit time collision theory atoms, ions, and molecules can react to form products when they collide, provided that the particles have enough kinetic energy Factors that affect reaction rate nature of the reactants, concentration, pressure of gases, temperature, surface area and the presence of a catalyst Nature of the reactants small molecules with fewer bonds, ionic bonds, single bonds will react fast...

Reaction Rate time it takes for the reactant to become the product; no chemical reaction is instantaneous For minimum energy required for chemical reaction to occur: must separate (work is done); particles are broken down by dipolar water molecules; ions must fight throught the water to re-combine 3 ways used to study reaction rate: (1) Measure the time it takes for the product to first appear;(colorless to a color) (2) Measure the time it takes for one or both reactants to b...

Three Domains Archea, Bacteria, Eukarya Hierarchy Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species Zone of inhibition The clear region around the paper disc saturated with an antimicrobial agent on the agar surface. The clear region is an indication of the absence, or the effective inhibition, of microbial growth by the antimicrobial agent. Koch's Postulates 1. The suspected causative agent must be found in every case of the disease and be absent from he...

Physical Activity Any bodily movement produced by contracting skeletal muscles, with an increase in energy expenditure. Exercise Planned, purposeful, repetitive Physical Fitness Attributes or characteristics that individuals have achieved that related to their ability to perform physical activity 3 metabolic pathways the body uses to creates ATP 1. Creatine Phosphate 2. anaerobic glycolysis 3. 0xidative system Claudication pain in the leg is induced by exercise...

Based on what you learned from oxygen-hemoglobin dissociation curve, a 70% oxygen saturation level of the blood returning to the lungs might indicate a physical activity level higher than normal a) true b) false b) false The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining. Which of the following accomplish this task? a) villi & microvilli b) the vast array of digestive enzymes c) Brunner's glands and Peyer Patches d)...

prevalence number of existing cases / number of population incidence number of new cases / number of persons at risk of developing disease relationship between incidence and prevalence prevalence = incidenceXduration relationship between incidence rate and mortality rate mortality rate easier to obtain than incidence - use when case-fatality rate is high - use when duration of disease is short importance of surveillance - monitor changes in disease frequency -...

tetrodotoxin inhibits which ion channel - what is the result of this? sodium channels - causes cardiac arrest this toxin is found in puffer fish dark urine in the mornings - what is the pathogenesis of this condition? this condition is paroxysmal nocturnal hemoglobinuria = defect in PIGA / cell membrane anchoring protein --> decreased expression of Decay accelerating factor and membrane inhibitor of reactive lysis synaptobrevin is found where? what is its function? on the ...

25 yo F at 27 weeks w/ severe contractions x6 hours, vaginal spotting, contractions every 2-3 mins w/ FHR 130 and no decels, cervic 1-2 cm and 70% effaced, GBS is positive. next step? IM beclamethasone THEN later can give penicillin man w/ 15 yr hx of difficult relaxing hands after tightly gripping objects or shaking hands, difficulty releasing after gripping w/ hands. dx? myotonic muscular dystrophy pt unable to see out of R eye since awakening 2 hrs ago. visual acuity 20/200 in...

Epidemiology Science of public health. Study of disease within populations & risk factors. Risk factors are genetic, environmental, social, cultural, or on some direct action by the individual. Servers to find the "why" of a disease & then to analyze the disease screening, treatment, prevention, and monitoring. population health focuses on risk, data, demographics, and outcomes Outcomes End result that follows an intervention Aggregate defined population ...

When do aircrew report for work? 45 minutes before the flight How much time is allocated to Aircrew to complete their post-flight duties? ... During a cabin crew pre-flight safety briefing which topics must be covered? Safety, First Aid and Security Where would you find S.E.P Manual? vpos What are the PDIs of the No4? (if the No4 is not at the Boarding Gate) • assigned door checks at R1 door • Toilet checks at FWD toilet • Cabin checks at rows 1-10 • ...