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wel
3 years ago
7

Which of the following is an example of positive feedback?

Biology
1 answer:
LenKa [72]3 years ago
5 0
D. the release of oxytocin during childbirth
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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
1 year ago
Unlike the female reproductive system, the male reproductive system
Zina [86]
Could you add a little more to this question, please?
3 0
3 years ago
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Which system is responsible for protection as well as support of the body's weight?
Leviafan [203]
The answer is D) skeletal system 

3 0
3 years ago
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What is the name of the first and second tubule in the nephron?
NeX [460]

Answer:

proximal tubule

Explanation:

8 0
2 years ago
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The very rare Bombay blood phenotype in humans results in blood type O because of the lack of both the A and B antigens in indiv
madam [21]

Answer:

The probability that the child will have type blood B equals <u>3/16</u>.

Explanation:

<u>Available data:</u>

  • Individuals with the rare Bombay blood phenotype lack both the A and B antigens in individuals and/or are of hh genotype.
  • Cross between two parents that are both of I A I B Hh genotype

Cross: IAIB Hh    x    IAIB Hh

Gametes) IAH, IAh, IBH, IBh  

                IAH, IAh, IBH, IBh

Punnett square)        IAH            IAh         IBH         IBh

                   IAH      IAIAHH     IAIAHh    IAIBHH   IAIBHh

                   IAh       IAIAHh     IAIAhh     IAIBHh    IAIBhh

                   IBH      IAIBHH     IAIBHh     IBIBHH   IBIBHh

                   IBh       IAIBHh     IAIBhh      IBIBHh   IBIBhh

F1) Genotype

  •     1/16 IAIA HH
  •     2/16 IAIAHh
  •     1/16 IAIAhh
  •     2/16 IAIBHH
  •     4/16 IAIBHh
  •     2/16 IAIBhh
  •     1/16 IBIBHH
  •     2/16 IBIBHh
  •     1/16 IBIBhh

    Phenotype

  •     3/16 Blood type A
  •     6/16 Blood type AB
  •     3/16 Blood type B
  •     3/16 Blood type 0  
3 0
2 years ago
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