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PCAT Word List # PCAT/M38

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  Word Explanations iso-, ultraviolet, isosorbide dinitrate, heat, forebrain, mastoid, unreactive, stomata, somatic, hemiacetal


   
Explanation of iso- (preffix)
equal

Sample of iso-
Isometric contraction of muscle is a contraction that does not cause muscle shortening.



   
Explanation of ultraviolet (adjective)
form: no plural

having shorter wavelengths than visible light

Sample of ultraviolet
Ultraviolet light ranges from 4nm to 380nm on the light spectrum.



   
Explanation of isosorbide dinitrate (noun)
form plural: isosorbide dinitrates

generic name for drug which is used pharmacologically as a vasodilator; brand names: Isordil, Sorbitrate

Sample of isosorbide dinitrate
Isosorbide dinitrate, an organic nitrate, is a vasodilator with effects on both arteries and veins.



   
Explanation of heat (noun)
form: no plural

high temparature

Sample of heat
After days in searing heat, Australian aboriginals withstand cold nights in the desert without shivering; possible mechanisms are enhanced metabolism, a lower threshold for the start of shivering, and a slight overnight fall in core temperature.



   
Explanation of forebrain (noun)
form plural: forebrains

prosencephalon

Sample of forebrain
The brain can be divided into the forebrain, midbrain and hindbrain.



   
Explanation of mastoid (noun)
form plural: mastoids

part of the skull

Sample of mastoid
The mastoid area lies behind the ear.



   
Explanation of unreactive (adjective)
not able to respond readily

Sample of unreactive
The noble gases are unreactive.
Most ancient silver was extracted from argentiferous (silver-rich) lead by cupellation, a process dating back to at least the second millennium BC, which involved oxidising the lead to molten litharge (lead oxide), leaving the relatively unreactive silver as the metal.



   
Explanation of stomata (noun)
form: only plural

pores on the leaf surface

Sample of stomata
Transpiration occurs from the surface of the leaf through stomata.
With atmospheric levels of carbon dioxide expected to double in the next century, plants would open the stomata through which they breathe for shorter periods reducing the transpiration of water and providing less water for cloud formation.



   
Explanation of somatic (adjective)
relating to the body

Sample of somatic
Somatic cells undergo mitosis.
Capsaicin sensitive afferent neurones may affect both defense and repair mechanisms in the gastric mucosa, because they are sensitive to a variety of noxious stimuli and have been reported to play both a defensive and trophic part in somatic tissues.



   
Explanation of hemiacetal (noun)
form: no plural

molecule containing an alkyl group

Sample of hemiacetal
When an equivalent of alcohol is added to an aldehyde or ketone, the product is hemiacetal.



  Explain the words iso-, ultraviolet, isosorbide dinitrate, heat, forebrain, mastoid, unreactive, stomata, somatic, hemiacetal

  Preparation book: Dna topoisomerases in Cancer

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     PCAT prep test: Learn English Vocabulary: List of Preffixs Adjectives Nouns         PCAT vocab test: Free word games: Online Adjective Noun Game         PCAT Test: (printable version)         Meaning of iso-, ultraviolet, isosorbide dinitrate, heat, forebrain, mastoid, unreactive, stomata