Ben Powell

City: Fairfax, VA
University: George Mason University

Posts by Ben Powell:

Bug Parade 3 – Flashcards
31 Dec 2017 Flashcards

question Absidia biology answer FungusTissue sample: irregular broad hyphae, aseptate, 90* branching, ribonnyCulutre: lid-lifter, sporangia with conidia inside, rhizoids between sporangia bases question Absidia diagnosis and treatment answer Dx: Culture (lid-lift, sporangia with rhizoids between bases)Tx: treat underlying IMC, surgical debridement, AmpB + Caspofungin or prosaconazole + caspofungin question Absidia disease answer MucormycosisRhinocerebral: DM with […]

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Basu lab practical 3 – Flashcards
29 Dec 2017 Flashcards

question Throat culture medium answer Sheep blood agar plate question Approximately how many people are healthy carriers of Staphylococcus aureus? answer 30% question How is Staphylococcus aureus transmitted? answer person to person question Nasal culture medium answer Mannitol salt agar plate question Mannitol salt agar medium is selective for? answer isolation of staphylococci question Significant […]

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Chapter 8: The Physical Geography of Latin America VOCAB – Flashcards
29 Dec 2017 Flashcards

question cordillera answer parallel chains of ranges of mountains question altiplano answer Spanish for “high plain”, a region in Peru and Bolivia encircled by the Andes peaks question escarpment answer steep cliff or slope between a higher and lower land surface question llano answer inland area of Colombia and Venezuela that hold vast grasslands question […]

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(H) Modern World History Final Exam Study Guide Flashcards
28 Dec 2017 Flashcards

question What is militarism? answer It is the glorification of the military. question What is propaganda? answer It is the spreading of ideas to promote a certain cause or to damage an opposing cause. question Who was Francis Ferdinand? answer He was the Archduke of Austria who’s assassination set off World War II. question What […]

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Orgo Lab – Chemistry Test Questions – Flashcards
28 Dec 2017 Flashcards

question SN1 vs SN2 Reactivity answer SN1 Reactivity Methyl<primary<secondary<tertiary Why? Carbocation stability Steric congestion does NOT play a role SN2 Reactivity Tertiary<secondary<primary<methyl Steric congestion DOES play a role No carbocation formation question Good Nucleophiles answer Not electronegative Poorly solvated polarizable Form strong bonds with carbon small impt in SN2 question Bases answer Availability and Stability […]

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Economics Homework 1 – Flashcards
27 Dec 2017 Flashcards

question B) scarcity. answer In economics, choices must be made because we live in a world of question the choices people make to attain their goals, given their scarce resources. answer By definition, economics is the study of question in any arena that brings together buyers and sellers answer Where do economic agents such as […]

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Mastering Biology Final Exam – Flashcards
26 Dec 2017 Flashcards

question In the post-synaptic neuron with a resting potential of -70mV and a threshold of -50mV. Two EPSPs decrease the membrane potential by 15mV each and one IPSP increases the membrane potential by with a 15mV. Does this post-synaptic cell fire an action potential? answer Yes question During sensory adaptation your response to a stimulus […]

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To Kill A Mockingbird Study Guide Questions Chapters 26-31 – Flashcards
26 Dec 2017 Flashcards

question What was Scout’s fantasy regarding Arthur (Boo) Radley? answer She fantasized that he was like one of the normal neighbors that she talked to all the time. question What did Scout hear Miss gates say at the courthouse? In class, Miss Gates said,” That’s the difference between America and Germany. We are a democracy […]

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tri-(2-hydroxyethyl) ammonium acetate C8H19NO5 structure – Flashcards
24 Dec 2017 Flashcards

Molecular Formula C8H19NO5 Average mass 209.240 Da Density Boiling Point Flash Point Molar Refractivity Polarizability Surface Tension Molar Volume Predicted – ACD/Labs Predicted – ChemAxon Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module No predicted properties have been calculated for this compound. Density: Boiling Point: Vapour Pressure: Enthalpy of Vaporization: Flash […]

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#6 Respiratory Tract Infections III – Flashcards
23 Dec 2017 Flashcards

question What is causes Legionnaires’ disease? answer Legionella pneumophila which is a rod shaped, gram negative bacteria that requires special charcoal containing medium for growth, difficult to gram-stain, flagella may be present (motile) question What special requirement does L. pneumophila require for growth? answer Must be grown on charcoal medium, requires L-cysteine, ferric ions, and […]

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Lorazepam C15H10Cl2N2O2 structure – Flashcards
22 Dec 2017 Flashcards

Molecular Formula C15H10Cl2N2O2 Average mass 321.158 Da Density 1.5±0.1 g/cm3 Boiling Point 533.8±50.0 °C at 760 mmHg Flash Point 276.7±30.1 °C Molar Refractivity 81.0±0.5 cm3 Polarizability 32.1±0.5 10-24cm3 Surface Tension 56.0±7.0 dyne/cm Molar Volume 211.2±7.0 cm3 Experimental data Predicted – ACD/Labs Predicted – EPISuite Predicted – ChemAxon Experimental Physico-chemical Properties Experimental Melting Point: 167 °C […]

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22. STDs – Microbiology – Flashcards
22 Dec 2017 Flashcards

question What STIs are considered Curable? answer – Chlamydia– Gonorrhea– Trichomoniasis – Syphilis – Chancroid question Which STIs are incurable? answer – HIV/AIDS– HPV– Hepatitis B– Herpes question Consequences of STIs for women answer – Pelvic Inflammatory Disease – Infertility, ectopic pregnancy– Cervical cancer– Adverse pregnancy outcomes question Consequences of STIs in infants answer – […]

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Intro to Lifetime Fitness – Flashcards
21 Dec 2017 Flashcards

question Cardiorespiratory endurance answer the ability of the heart, lungs, and blood vessels to transport oxygen to the cells of the muscles so they can work (contract) over a long period of time. This definition could also be called aerobic endurance. question muscular strength answer the ability to exert maximum force against resistance. question muscular […]

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Study Guide Answers – Waves – Flashcards
21 Dec 2017 Flashcards

question A rhythmic disturbance that carries energy. A motion of a vibration. answer wave question Is the ability to do work or cause motion. answer Energy question The distance between a point on a wave & the identical point on the next wave. The length of a wave. answer Wavelength question Back and forth motions. […]

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A Midsummer Night’s Dream Act 1 – Flashcards
21 Dec 2017 Flashcards

question Why doesn’t Lucia tell Ivette everything about where her mother’s jewelry is hidden and about Doc Machado? answer Because the words wouldn’t come out. question Why doesn’t Lucia tell Ivette everything about where her mother’s jewelry is hidden and about Doc Machado? answer Because the words wouldn’t come out. question Why doesn’t Lucia tell […]

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chap. 4 IFSTA Pumping Apparatus Driver/Operator 2nd edition – Flashcards
20 Dec 2017 Flashcards

question What is one of the most critical aspects of a driver/operators responsibilities? answer The ability to safely control and maneuver a fire apparatus. question What percentage of all firefighter injuries and deaths in the US caused by vehicle collisions, as historically shown by NFPA? answer 20-25% question According to the DOT about how many […]

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Sodium ethanethiolate C2H5NaS structure – Flashcards
20 Dec 2017 Flashcards

Molecular Formula C2H5NaS Average mass 84.116 Da Density Boiling Point Flash Point Molar Refractivity Polarizability Surface Tension Molar Volume Experimental data Predicted – ACD/Labs Predicted – ChemAxon Miscellaneous Safety: Corrosive/Stench/Air Sensitive/Moisture Sensitive/Store under Argon SynQuest 5161-1-00 Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module No predicted properties have been calculated for […]

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1,1-DIFLUOROETHYLENE C2H2F2 structure – Flashcards
19 Dec 2017 Flashcards

Molecular Formula C2H2F2 Average mass 64.034 Da Density 1.0±0.1 g/cm3 Boiling Point -85.7±8.0 °C at 760 mmHg Flash Point -90.9±6.3 °C Molar Refractivity 11.2±0.3 cm3 Polarizability 4.4±0.5 10-24cm3 Surface Tension 8.8±3.0 dyne/cm Molar Volume 67.3±3.0 cm3 Experimental data Predicted – ACD/Labs Predicted – EPISuite Predicted – ChemAxon Experimental Physico-chemical Properties Experimental Melting Point: 155-160 °C […]

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CS 104 – Space – Flashcards
18 Dec 2017 Flashcards

question Application software helps run the computer and coordinates instructions answer False question windows 7 is operating system software. answer True question Word processing software allows you to easily change the appearance and organization of your documents answer True question Many word processing software packages have themes of coordinated colors and styles that you can […]

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Midterm – Flashcards
18 Dec 2017 Flashcards

question Alcohol use/dependence among adolescents increases their risk of suicide 30-fold in comparison to those not using any substance answer FALSE question More than 5,000 college students die annually from alcohol related injuries answer FALSE question A lower prevalence of early substance use results in a reduced rate of dependence as an adult answer FALSE […]

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4-Nitropyridine 1-oxide C5H4N2O3 structure – Flashcards
17 Dec 2017 Flashcards

Molecular Formula C5H4N2O3 Average mass 140.097 Da Density 1.4±0.1 g/cm3 Boiling Point 397.2±15.0 °C at 760 mmHg Flash Point 194.0±20.4 °C Molar Refractivity 33.5±0.5 cm3 Polarizability 13.3±0.5 10-24cm3 Surface Tension 65.2±7.0 dyne/cm Molar Volume 97.8±7.0 cm3 Experimental data Predicted – ACD/Labs Predicted – EPISuite Predicted – ChemAxon Experimental Physico-chemical Properties Experimental Melting Point: 161 °C […]

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Physical Science Test Questions – Flashcards
15 Dec 2017 Flashcards

question The layers of the Earths atmosphere, from top to bottom, are the answer D. Exosphere, Thermosphere, Mesosphere, stratosphere and troposphere question Daylight and night time hours are equal answer D. Both B and C-B. In mid-September and mid march C. During the equinoxes question All of the Earth’s weather occurs in the answer A. […]

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