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il63 [147K]
3 years ago
8

Parkinson disease is a progressive loss of motor function due to the degeneration of specific neurons. These neurons secrete an

inhibitory neurotransmitter that prevents excessive activity in motor centers of the brain. What neurotransmitter is this?
Biology
1 answer:
igor_vitrenko [27]3 years ago
8 0

Answer:

Dopamine

Explanation:

Parkinson’s disease is a degenerative, progressive disorder that affects nerve cells in parts of the brain called the basal ganglia and the substantia nigra.

The neurotransmitter dopamine is produced by nerve cells in the substantia nigra and these nerve cells function in relaying information from the brain that plan and control body movement. In Parkinson's disease, the dopamine-producing nerve cells of the substantia nigra begin to die off . Symptoms such as tremor, impaired movement, stiffness, and balance problems occur when the loss of nerve cells is about 80%

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Grassland ecosystems in Texas have evolved to depend on periodic fires to return nutrients to the soil and encourage plant repro
just olya [345]

Answer:

Succession

Explanation:

<u>The biologists were attempting to imitate succession.</u>

Succession refers to a gradual change to the structure and species composition of a community over a period of time.

A newly colonized environment such as a bare rock forms a community is said to be in primary succession. Thereafter, the structure and composition of the community keep changing until a relatively stable community, otherwise known as climax community, is established.

Secondary succession happens when a disturbed community tries to regain its original dynamics in terms of species composition and structure. A climax community is often less diverse than a community that is still in active succession.

<em>Hence, the biologists were attempting to imitate succession by burning/disturning a relatively stable, less diverse climax community of grassland in order to realize a more diverse community that will undergo secondary succession. </em>

6 0
3 years ago
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What advantage does the membrane bound organelles give a eukaryotic cell over a prokaryotic cell?
aksik [14]
1) they allow for multiple reactions in the cell at once for example the mitochondria producing ATP for respiration and The Rough endoplasmic reticulum and ribosomes for protein synthesis 
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3 years ago
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Mumz [18]

Answer:

transcription whic uses transcriptase enzyme

Explanation:

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7 0
2 years ago
PLZZZ HELP
Nuetrik [128]

Answer:

B) Tide gauge

Explanation:

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6 0
3 years ago
Describe the interactions between organisms and the environment.
Yanka [14]

Answer:

they help it thrive and live because it just goes in a circle sun grows plants plants feed  herbivores, herbivores feed omnivores then it eventually gets to the top of the food chain and when the top of the food chain dies it decomposes and gives the ground fertilizer and starts all over again

Explanation:

because it is the circle of life

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