Answer:
A
Explanation:
The light from the sun is blocked by the moon, causing the earth to appear dark during the day.
It exhibits both cleavage and fracture.
"Hardness is 10. Specific Gravity is 3.5 (above average) Cleavage is perfect in 4 directions forming octahedrons. Fracture is conchoidal."
-galleries.com (diamonds)
Answer:
a. Amyloid fibrils have a high amount of β-sheet structure.
c. Because most newly synthesized proteins fold correctly, the accumulation of misfolded proteins (or fragments) tends to occur slowly, thus explaining the slow onset of disease.
e. Proteins that form amyloid fibrils are normally soluble.
Explanation:
Amyloids can be defined as fibrillar protein aggregates composed of a β-sheet secondary structure. In general, the amyloid fibrils are composed by soluble proteins that are assembled to form insoluble resistant to degradation fibers. In humans, defective amyloid proteins produced by misfolding are known to produce diseases (amyloidosis) capable of altering the function of tissues and organs. Systemic forms of amyloidosis are common in neurodegenerative disorders.
