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k0ka [10]
3 years ago
7

A researcher who studies neurodegenerative diseases has found that dying neurons contains a high concentration of miss-folded pr

oteins in their cytoplasm. further experiments demonstrated that the lysosomes are working properly in these neurons. according to this information, which cellular structure is responsible for this disease?
Biology
1 answer:
tensa zangetsu [6.8K]3 years ago
6 0
The cellular structure responsible for this disease is THE ENDOPLASMIC RETICULUM. 
In eurkaryotic cells, endoplasmic reticulum is very essential for the folding and trafficking of proteins. Increased protein synthesis and environmental insults usually leads to the misfolding of proteins by endoplasmic reticulum. The accumulation of misfolded proteins inside the cell is called endoplasmic reticulum stress.
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Answer:

150.

Explanation:

150 flies are expected to have normal body color and to be eyeless in F2 generation. The reason for that population is the ratio of the species produced. The ratio of the species are 9:3:3:1. Ratio 9 refers to first parent while 1 refers to second parent and the middle 3's represent the hybrid formed. So the population of first parent is 450 and population of second parent is 50 while the population of two hybrids are 150 each.

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3 years ago
The pKa for the side chain of histidine is 6.0. What is the ratio of the deprotonated imidazole side chain to the protonated sid
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Answer:

When the pKa is 6.0, we can determine the fraction of protonated H is by:

pH = pKa + log [A]/[HA]

Where

A = Deprotonated imidazole side

HA = Protonated side

Given, pH = 5.0

5 = 6 + log [A]/[HA]

log [A]/[HA] = -1 (take antilog of both side)

[A]/[HA] = 0.1

The ratio of the deprotonated imidazole side chain to the protonated side chain at pH 5.0 = 0.1

Given, pH = 7.5

7.5 = 6 + log [A]/[HA]

log [A]/[HA] = 1.5 (take antilog of both sides)

[A]/[HA] = 31.62

The ratio of the deprotonated imidazole side chain to the protonated side chain at pH 5.0 = 31.62

7 0
3 years ago
The nurse is assessing a 36-year-old client who is planning for a second pregnancy. after reviewing the client’s medical record,
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This could be that the patients ovaries are unable to produce eggs anymore or have a diminished ovarian reserve and produce few eggs...
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when metals, nonmetals, and metalloids are compared according to luster, which is the best description of the appearance of meta
Harlamova29_29 [7]

Answer:

D they are both because they can be both metals and no metals

Explanation:

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Answer:

C, a long absolute refractory period.

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