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Questions and Answers
What is the size range of viruses?
What is the size range of viruses?
- From that of large proteins (-20 nm) to that of the smallest cells (-300 nm) (correct)
- From that of large proteins (-10 nm) to that of the smallest cells (-200 nm)
- From that of large proteins (-100 nm) to that of the smallest cells (-1000 nm)
- From that of large proteins (-50 nm) to that of the smallest cells (-500 nm)
What do prion proteins in infected brain tissue form?
What do prion proteins in infected brain tissue form?
- Linear particles that are morphologically and histochemically indistinguishable from amyloid
- Rod-shaped particles that are morphologically and histochemically indistinguishable from amyloid (correct)
- Fibril-shaped particles that are morphologically and histochemically indistinguishable from amyloid
- Spherical particles that are morphologically and histochemically indistinguishable from amyloid
What mediates the interaction between the matrix protein?
What mediates the interaction between the matrix protein?
- The matrix protein (correct)
- The prion protein
- The vacuolated appearance
- The inflammatory cells
What substance is found in the brain tissue of individuals with various central nervous system diseases?
What substance is found in the brain tissue of individuals with various central nervous system diseases?
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What do all viruses contain?
What do all viruses contain?
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Study Notes
Size of Viruses
- Viruses range in size from 20-400 nanometers (nm) in diameter.
Prion Proteins
- Prion proteins in infected brain tissue form abnormally folded amyloid fibrils.
Matrix Protein Interaction
- The interaction between the matrix protein is mediated by a lipid bilayer.
Brain Tissue Components
- Amyloid-β peptide, a substance found in the brain tissue of individuals with various central nervous system diseases, such as Alzheimer's disease.
Viral Components
- All viruses contain genetic material, either DNA or RNA, and a protein coat that protects the genetic material.
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