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julia-pushkina [17]
3 years ago
9

What is silicon, oxgyen, aluminum chemical composition. A. crust B. mantle C. cores​

Biology
1 answer:
PolarNik [594]3 years ago
5 0

Answer:

A. Crust

Explanation:

The most common chemical elements in the crust are oxygen (46.6%), silicon (27.7), aluminum (8.1), iron (5.0), calcium (3.6), potassium (2.8), sodium (2.6), and magnesium (2.1). These figures vary among different studies because we really have no way to know for sure.

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dynamic modeling of alpha-synuclein aggregation for the sporadic and genetic forms of parkinson's disease
Triss [41]

Numerous degenerative neurological conditions, most notably Parkinson's disease, have been linked to an excessive buildup of alpha synuclein (a-syn) in the brain. Intraneuronal inclusions, often known as Lewy bodies, are neuropathological characteristics seen in Parkinson's disease, Lewy body dementia, and other synucleopathies. The aggregation of a-syn is their main structural component. A-syn accumulation, aggregation, and ensuing Lewy body formation can be attributed to a variety of biological processes. These include genetic changes in parkin, synuclein, or the deubiquitinating enzyme ubiquitin C-terminal hydrolase (UCH-L1), which results in less efficient removal of a-syn via the ubiquitin proteasomal pathway (UPP). Additionally, environmental variables and an age-related decline in antioxidant defense mechanisms that heighten oxidative stress and can have an impact on the formation or clearance of a-syn are intracellular insults.

We focused on changes in the aggregation and clearance of a-syn as impacted by the UPP and the oxidative stress pathways in our dynamic models of a-syn processing in both normal and various disease states. A free radical profile similar to that observed in vivo after exposure to the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine is produced during simulation of enhanced oxidative stress (MPTP). To replicate the kinetics of a-syn that correlates to the neuropathology reported for the sporadic and hereditary types of Parkinson's disease, different model parameters of oxidative stress, UPP failure, or both routes are used. With the use of this in silico model, it is possible to evaluate the kinetics of pathway elements and more accurately identify and validate key pharmaceutical targets.

Learn more about Parkinson's disease brainly.com/question/28169444

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3 0
2 years ago
Which of the following best explains why ecosystems need a continual influx of new energy?
Viktor [21]
Energy flows through an ecosystem and cannot be recycled. 
8 0
3 years ago
Which is a conclusion drawn from the observed DNA similarities found between apes and chimpanzees?
ira [324]

Answer:

D) Apes and chimpanzees are thought to have evolved from a common ancestor.

5 0
3 years ago
How do scientists decide when to change or modify their understanding of a particular topic?​
Natali5045456 [20]

Answer:

they carry out experiments to understand it

Explanation:

Scientists raise hypotheses which are tested by experiments made under controlled conditions in order to explain a particular topic. When a hypothesis is confirmed by the experimental data, the evidence obtained from this experiment provides the basis to increase the scientific knowledge about a particular issue. In consequence, experimentation can be considered as a critical step in the scientific method and research aims to advance knowledge of a particular phenomenon by confirming a hypothesis, which must be testable (i.e. verifiable as a result of further experimentations).

6 0
3 years ago
NO LINKS PLEASE
slega [8]

Answer:

D. New species of iguanas

Explanation:

A- doesn't make sense because nature changes every day.

B- More islands is possible but not likely considering your other options.

C- More tortoises is also possible but because I haven't read your text book or where your learned this information I can't be sure this is it.

D- Is the likeliest

5 0
3 years ago
Read 2 more answers
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