Khan Academy MCAT Practice Passages – Chemistry-Physics

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MCAT Khan Academy Chemistry & Physics Passages

Swine flu in Finland

The world's fastest mammal

The ballistics of gene bombardment

Concussions in professional athletes

DNA motion in gel electrophoresis

Ancient Greek catapults and medical packs

Knee injuries in athletes

Forces on a kidney stone

An elevator in a hospital

A ramp in an administrative office

Testing new suture material

Patients in a wheelchair

Frictionless pulley system

Hills, inclement weather, and cars

Frictional forces on mobility walkers

How do geckoes stick to surfaces?

Comparing stress exerted by different running shoes

Basal metabolic rate and energy expenditure

Rollercoasters are energy at work!

Elasticity and kinetics of vulcanized rubber

Standing balance

The forearm as a third-class lever

The physics of walking and running

A physical model of human sitting

Forces and torque acting on the hip joint

Effects of microgravity on muscle tissues

Tension in the muscles

A scale under water

Hydrotherapy and full body immersion

Flow and Poiseuille's law in operation

The tubular system in an aquarium

Blood flow in arteries

Leukocytes rolling on blood vessel walls

Cardiac pressure-volume curves 1

Cardiac pressure-volume curves 2

Coronary heart disease and blood pressure

Ideal gases in medicine

Chlorofluorocarbons and the environment

Charles' law and gas in a piston

Heat engines and work

Preventing barotrauma in deep-sea divers

Pressure regulation and fluid dynamics of the respiratory system

Fick's law and oxygen diffusion in salmon

Medicine and metal spheres

Electric field treatments and electroporation

Analyzing electrocardiogram voltage signals

The elements of a simple defibrillator

Capacitors in electrocardiography monitors

Electromyography and passive filters

Cardiac dysrhythmia and defibrillators

Mass spectrometry in the operating room

The effect of contrast agents on MRI signals

Studying metabolism with galvanic cells

Electrochemistry and circuit components of axons

Neuronal membranes as nature's capacitors

The speed of a neural impulse

How movements influence an ultrasound

Resonance in a tube

Clinical applications of tuning forks

Doppler effect in living tissue (ultrasound)

The effects of ear canal acoustics on hearing ability

Pure tone audiometry in diagnosing hearing loss

Using ultrasounds to measure blood flow velocity

The effects of ultrasound on different tissue types

Shortwave diathermy in rehabilitative medicine

An experiment with light rays and a prism

Using optical traps to manipulate DNA

Looking skin deep with dermoscopy

A mirror in an operating room

Analysis of image production by the human eye

The refraction of light through the human eye

The physics of eyesight correction

Converging and diverging lenses in a lab

Hyperopia and convex lenses

Eye disease and contact lenses

Using scallops to correct vision

Therapeutic radioisotopes

Radioactive tracer Technetium-99

Decay of iodine-131

Technetium decay and its cardiac application

Gamma knife radiosurgery

Radionuclides for radiopharmaceuticals

Muon tomography for medical imaging

Particle accelerators for proton beam therapy

Alcohol production and absorption

The bicarbonate buffer system and pH regulation

Stoichiometry and properties of acetic acid

How do organisms maintain a constant pH range?

The bicarbonate buffering system and titration curves

Applications of hard-soft acid-base theory

Changes that occur after death

Qualitative analysis of water supply

Phase changes: What conditions influence lyophilisation?

Using a freezing point depression osmometer

Separating drug enantiomers

Extraction to separate benzene derivatives

Creating and separating acetone

Purification of caffeine

Melting point and thermodynamics of DNA

Homocystinuria and its associate treatments

Protein structure and folding

What causes red blood cells to sickle?

Hemiacetal formation of carbohydrates

The structure and function of glycogen

The electrophoretic separation of proteins

Methanol and its metabolites

The structural consequences of beta-lactams

Synthesis of anti-tumor drug derivatives and NMR analysis

Creating fuel from algae

Lactate dehydrogenase and exhausted athletes

Gene expression and histone methyltransferase

MAO isoenzymes and inhibitors

Acetylcholinesterase catalysis and inhibition

Protein binding

Ribose-bind protein in vitro reconstitution

Gallium arsenide formation

Isothermal titration calorimetry in drug development

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