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Practice Reading: Fill in the Blanks (Dropdown) ID: #51207 Amyloid Beta
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Below is a text with blanks. Click on each blank, a list of choices will appear. Select the appropriate choice for each blank.
* Select the correct answer into all dropdown fields. You need to answer all questions before clicking verify button.
It's  like  the  molecular  version  of  the  Joker  and  the  Riddler  teaming  up  against  Batman.    at  Yale  University  have  discovered  that  amyloid  beta,  a  protein  involved  in  Alzheimer's  disease,  can  damage  brain  cells  by  binding  to  prion  proteins,  which  are  themselves  infamous  because,  in  their  abnormal  form,  they  cause  things  like  mad  cow  disease.  Amyloid  beta  is  best  known  as  the  protein  that  forms  the  giant  plaques  that  riddle  the  brains  of  people  with  Alzheimer's.  Those  plaques  contain  billions  of  copies  of  amyloid  beta  all  stuck  together  in  one  gloppy  mess.  But  the  protein  also  exists  in  a  more  soluble  form,  either  in  single  units  or  in  small  groups  of  50  or  100.  These  smaller  clusters  don't  cause  the  same  large-scale  mayhem  as  plaques,  but  they  do  damage  neurons,  impairing  their  ability  to  learn.  And  the  Yale  researchers  wanted  to  find  out  how.  They  discovered  that  amyloid  beta  binds  to  the  prion  proteins  normally  found  on  neurons.  What's  more,  the  prions  ramp  up  amyloid  beta's    effects.  Take  away  the  prions  and  amyloid-beta  clusters  are  ,  findings    in  the  journal  Nature.  So  drugs  that  prevent  this  amyloid-prion  coupling  could  be  a  potent  weapon  against  Alzheimer's.

Result:

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Correct answer: Scientists

Explanation: The term 'Scientists' fits grammatically as a plural noun that refers to the individuals conducting research at Yale University. It aligns contextually with the subject of the sentence, which discusses a discovery made by a group of researchers.

Meaning: 'Scientists' are individuals who conduct scientific research and experiments to gain knowledge about the natural world.

Wrong options:

  • Wirelesses: 'Wirelesses' is a plural noun referring to wireless technologies or devices, which does not fit the context of research or discovery.
  • Fineness: 'Fineness' is a noun that refers to the quality of being fine or delicate, which is unrelated to the context of scientific research.
  • Hypoglycaemics: 'Hypoglycaemics' refers to substances that lower blood sugar levels, which is not relevant to the context of the research being discussed.
Correct answer: neurotoxic

Explanation: The word 'neurotoxic' is an adjective that describes substances that are toxic to nerve cells. It fits grammatically and contextually, as it describes the harmful effects of amyloid beta when it binds to prion proteins.

Meaning: 'Neurotoxic' means harmful or damaging to the nervous system, particularly to neurons.

Wrong options:

  • allergic: 'Allergic' describes a reaction to allergens and does not relate to the toxicity of proteins in the context of brain health.
  • strophic: 'Strophic' refers to a type of song structure and is irrelevant in the context of neurobiology.
  • histrionic: 'Histrionic' describes overly dramatic behavior and does not apply to the scientific context of neurotoxicity.
Correct answer: harmless

Explanation: The word 'harmless' is an adjective that indicates something that does not cause harm. It fits grammatically and contextually, as it describes the state of amyloid-beta clusters when prions are removed.

Meaning: 'Harmless' means not causing any damage or injury; safe.

Wrong options:

  • commons: 'Commons' refers to shared resources or common areas, which does not fit the context of describing the safety of amyloid-beta clusters.
  • mollusks: 'Mollusks' are a type of animal, which is irrelevant to the discussion of amyloid-beta and its effects.
  • augments: 'Augments' is a verb meaning to increase or enhance, which does not fit the context of describing the state of amyloid-beta clusters.
Correct answer: published

Explanation: The word 'published' is the past participle of the verb 'publish,' indicating that findings have been made public. It fits grammatically and contextually, as it describes the action taken regarding the research findings in a scientific journal.

Meaning: 'Published' means to make information available to the public, especially in written form, such as in a journal.

Wrong options:

  • exulted: 'Exulted' is a verb meaning to show or feel elation, which does not fit the context of reporting research findings.
  • content: 'Content' is an adjective meaning satisfied or pleased, which does not apply to the action of sharing research results.
  • demist: 'Demist' is a verb meaning to clear mist from a surface, which is unrelated to the context of scientific publication.

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