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MCAT Word List # MCAT/M48

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Explanation of diffraction (noun)
form: no plural

change in the directions and intensities of a group of waves after passing by a barrier

Sample of diffraction
Diffraction is the spreading out of light as it passes through a narrow opening.



   
Explanation of xeno- (preffix)
foreign

Sample of xeno-
A xenograft is a transfer of foreign tissue.



   
Explanation of constituent (noun)
form plural: constituents

part making up something; component

Sample of constituent
Hydrogen and oxygen are constituents of water.



   
Explanation of syphilis (noun)
form: no plural

a sexually transmitted disease

Sample of syphilis
Syphilis is caused by the bacterium Treponema Pallidum.



   
Explanation of photosynthesis (noun)
form: no plural

process where plants take in light and carbon dioxide to make glucose

Sample of photosynthesis
Photosynthesis takes place in the leaves.



   
Explanation of addition-elimination reaction (noun)
form plural: addition-elimination reactions

describes a process where two molecules add together causing another molecule to removed (such as water)

Sample of addition-elimination reaction
Another term for addition-elimination reaction is a condensation reaction.

Medical term addition-elimination reaction
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Explanation of ionize (verb)
forms: ionized; ionized; ionizing

to separate or dissociate into ions

Sample of ionize
Water tends to ionise into hydrogen and hydronium ions.



   
Explanation of hyper- (preffix)
over; excess; high

Sample of hyper-
Hyperactive people find it difficult to relax.



   
Explanation of action potential (noun)
form: no plural

electrical impulse that passes along a muscle or nerve cell to carry information

Sample of action potential
There are no variations in the intensity of an action potential; it either fires or it doesn't fire!

Medical term action potential
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Explanation of homeostasis (noun)
form: no plural

the process that maintains balance or equilibrium of an organism's internal environment

Sample of homeostasis
Body temperature is controlled by homeostasis.



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