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MCAT Word List # MCAT/W108

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  Word Descriptions frameshift mutation, ovaries, electron shell, tympanic cavity, pupil, exoskeleton, tympanum, glass, myelin sheath, scurvy


   
Description of frameshift mutation (noun: no plural)
mutation in a DNA chain happening when the number of nucleotides is not three

Samples of frameshift mutation
Frameshift mutation is the addition or loss of nucleotides.



   
Description of ovaries (noun: only plural)
female gonads producing eggs and releasing the hormones estrogen and progesterone

Samples of ovaries
The ovaries are located below the digestive system.



   
Description of electron shell (noun: plural: electron shells)
outer covering represented by a circle around the nucleus that contains electrons of comparative energies

Samples of electron shell
The number of electrons in the outer electron shell determines the properties of atoms.



   
Description of tympanic cavity (noun: plural: tympanic cavities)
the middle ear

Samples of tympanic cavity
The tympanic cavity is a bony cavity that contains the ossicles.



   
Description of pupil (noun: plural: pupils)
opening in the iris allowing light to pass through to the retina

Samples of pupil
Pupils dilate in dark environments to let in more light.



   
Description of exoskeleton (noun: no plural)
an external skeleton that provides protection and muscle attachment for locomotion

Samples of exoskeleton
Arthropods and mollusks have an exoskeleton.



   
Description of tympanum (noun: plural: tympana)
the middle ear (tympanic cavity) and the eardrum (tympanic membrane)

Samples of tympanum
The external ear collects soundwaves and sends them to the tympanum.



   
Description of glass (noun: plural: glasses)
ceramic material made from heating silica and oxides in a furnace and then cooling and setting it

Samples of glass
As the liquid glass cools back to its melting point atom movement becomes restricted and disordered so it can be molded into shapes. As the glass cools further it sets hard.



   
Description of myelin sheath (noun: no plural)
this is a layer of Schwann cells which covers the nerve axon

Samples of myelin sheath
The myelin sheath is an electrical insulator.



   
Description of scurvy (noun: no plural)
disease caused by vitamin C deficiency

Samples of scurvy
Treatment with vitamin C reverses the effects of scurvy.



  Determinations of the words frameshift mutation, ovaries, electron shell, tympanic cavity, pupil, exoskeleton, tympanum, glass, myelin sheath, scurvy

  Preparation book: Surgical Pathology of the Ovaries

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     MCAT practice test: ESL English Vocabulary: Examples of Nouns         MCAT practice test: Online word games: Free Nouns Quiz         MCAT Practice: (printable version)         Definition of frameshift mutation, ovaries, electron shell, tympanic cavity, pupil, exoskeleton, tympanum