A&P 91 songs in the catalog · 4 free Sliding Filament Theory A&P · Muscle Contraction
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Quick check: ATP is required during muscle contraction specifically for:
A. Binding of calcium to troponin CB. Release of the myosin head from actin and resetting for the next power strokeC. Depolarization of the motor end plateD. Opening of voltage-gated calcium channels in the T-tubule
The Pump That Never Stops A&P · Na⁺/K⁺ ATPase & Membrane Potential
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Quick check: What is the approximate resting membrane potential of a typical neuron?
A. +70 millivoltsB. 0 millivoltsC. −70 millivoltsD. −120 millivolts
Coronary Circulation A&P · Blood Supply to the Heart
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Quick check: Most cardiac venous blood returns to the right atrium via:
A. The anterior cardiac veins directlyB. The thebesian veinsC. The coronary sinusD. The pulmonary veins
Cardiac Output Regulation A&P · Autonomic & Hormonal Control
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Quick check: Cardiac output (CO) is calculated as:
A. Stroke volume ÷ Heart rateB. Heart rate × Stroke volumeC. End-diastolic volume − End-systolic volumeD. Systolic pressure − Diastolic pressure
Microbiology 57 songs in the catalog · 2 free Just Right Microbiology · Environmental Growth Factors
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Quick check: A halophile is best defined as an organism that prefers:
A. High saltB. Low pHC. High pressureD. Cold temperatures
Light and Rock Microbiology · Photosynthesis & Chemolithotrophy
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Quick check: Oxygenic photosynthesis releases which gas, and from splitting what molecule?
A. H2S, from splitting sulfateB. O2, from splitting waterC. N2, from splitting nitrateD. CO2, from splitting glucose
Biology 51 songs in the catalog · 2 free Building Blocks of Me Biology · Proteins & Nucleic Acids
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Quick check: In DNA, adenine pairs with thymine and guanine pairs with:
A. ThymineB. CytosineC. UracilD. Adenine
Systems Go Part One Biology · Organ Systems Survey I
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Quick check: Which enzyme begins the chemical digestion of starch in the mouth?
A. TrypsinB. PepsinC. AmylaseD. Lipase
General Chemistry 42 songs in the catalog · 2 free Shape of Things General Chemistry · VSEPR & hybridization
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Quick check: A central atom with three electron groups and no lone pairs adopts which hybridization?
A. spB. sp²C. sp³D. sp³d
Over the Hill General Chemistry · Activation energy, Arrhenius & catalysis
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Quick check: A catalyst increases reaction rate by:
A. Increasing the temperatureB. Providing an alternative pathway with lower activation energyC. Shifting the equilibrium toward productsD. Increasing the enthalpy change
Organic Chemistry 46 songs in the catalog · 2 free Triple Threat Organic Chemistry · Alkyne structure, reactions & synthesis
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Quick check: A terminal alkyne can be deprotonated by a strong base to form a(n):
A. carbocationB. acetylide anionC. radicalD. carbene
Point the Way Organic Chemistry · Directing effects in disubstituted benzenes
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Quick check: Halogens are unusual EAS substituents because they are:
A. activating and meta-directingB. deactivating but ortho/para-directingC. activating and ortho/para-directingD. inert
Clinical Medicine 92 songs in the catalog · 2 free Fading Out Clinical Medicine · Addison's Disease
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Quick check: A 34-year-old with fatigue, hyperpigmentation, hyponatremia, hyperkalemia, and failed cosyntropin stimulation test. ACTH is markedly elevated. What is the diagnosis?
A. Secondary adrenal insufficiencyB. Pituitary adenomaC. Primary adrenal insufficiency (Addison's disease)D. Cushing's syndromeE. Congenital adrenal hyperplasia
Bull's Eye Clinical Medicine · Lyme Disease
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Quick check: Which tick transmits Lyme disease?
A. Ixodes scapularis (deer tick)B. Dermacentor variabilis (dog tick)C. Amblyomma americanum (lone star tick)D. Rhipicephalus sanguineus (brown dog tick)
Clinical Story Songs 93 songs in the catalog · 2 free Jimmy Clinical Story Songs · COPD
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Quick check: Jimmy's chest is wide and barrel-shaped, and it sounds like a drum when the doctor taps it. What is going on inside his lungs?
A. Air is trapped and the lungs are over-inflatedB. Fluid is filling the lungsC. One lung has collapsedD. The lungs are scarred and stiff
Eric Clinical Story Songs · Atrial Fibrillation
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Quick check: Why does the doctor put Eric on a blood thinner?
A. Blood pools in the quivering upper chambers, and a clot can travel and cause a strokeB. To slow his heart rate down so it stops flutteringC. To shock his heart back into a normal rhythmD. To bring his high blood pressure down