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puteri [66]
3 years ago
5

Positive symptoms of schizophrenia, specifically hallucinations and delusions, are thought to be caused by hyperactivity of whic

h neurotransmitter?
Biology
1 answer:
valentinak56 [21]3 years ago
8 0

Answer:

Dopamine.

Explanation:

Schizophrenia is a mental illness characterized by psychotic episodes and the inability to relate thoughts, feelings and actions, accompanied by delusions, hallucinations (auditory, visual, olfactory and tactile), incoherent thoughts, memory disorders and, in occasions, confusion. Dopamine is a hormone synthesized by the brain that acts as a neurotransmitter and allows the connection between neurons. Studies suggest that some of these alterations in mental functions are caused by an excess in the activity of dopaminergic synapses, that is, there is a hyperactivity in those connections where dopamine is produced and expelled, which range from the ventral tegmental area to the nucleus accumbens and the amygdala, which are the main ones responsible for synthesizing and expelling dopamine from brain reward systems.

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What scientific principle causes the different layers of the earth?
storchak [24]

Answer:

Density

Explanation:

7 0
4 years ago
Identify which type of natural selection is described in each case below.
ICE Princess25 [194]

Answer:

Results in the evolution of the species: Directional selection

Results in new species: Disruptive selection

Favors traits at the two extremes: Disruptive selection

No increase in diversity: Directional selection

One extreme trait is favored: Directional selection

Diversity decreases: Stabilizing selection

Diversity increases: Disruptive selection

Explanation:

Directional selection which is also known as positive selection is known to be a mode of natural selection. In this type of selection, an extreme phenotype is favored over other phenotypes. This makes the allele frequency to move in the direction of that phenotype and this takes place over time.

Disruptive selection (known to be diversifying selection) talks about the certain changes in the population genetics whereby extreme values of a particular trait are favored over intermediate values. This results in new species.

While Stabilizing selection is a natural selection whereby there is a stabilization of the population mean on the particular value of a non-extreme trait. Here the diversity is decreases.

3 0
3 years ago
During chick gastrulation, what germ-layer regions remain external and do not move inward?
Bas_tet [7]
<span>Opaca and Marginal zone stays outer and does not move during chick gastrulation, The zone opaca is a thick fringe ring comprising of more than one cell, it is joined to the germ wall. The Marginal zone lies at the fringe between the range opaca and the region pellucida</span>
8 0
3 years ago
When Mendel discovered inherited traits, one trait he looked at was the height of bean plants. The offspring of two tall bean pl
kotegsom [21]
<span>C.) the amount of water and sunlight each plant received

NOT:
</span>A.) the materials the plants' pots were made of
B.) the shape and size of the bean plants' leaves
D.) the type of bean plant<span>

</span>When Mendel discovered inherited traits, one trait he looked at was the height of bean plants. The offspring of two tall bean plants was likely to be tall <span>itself.</span><span> </span><span>Robert tries to reproduce Mendel's experiment, but he finds no relationship between the heights of the plants he grows and the heights of their parent plants. </span><span>

</span>
6 0
3 years ago
One advantage of storing excess energy as triglycerides as compared to storing it as glycogen is that:a. Triglycerides are store
Ostrovityanka [42]

Answer: C.

Explanation

There are higher C-H bonds in lipids than in Carbohydrates.

These C-H bonds stored higher chemical potential energy effectively of thr amount (413 kj/mol.)

Carbohydrates has high C-O glycosidic bonds or linkages of ( 358 kj/mol) which stores low amount of energy compare to C-H bonds.

Futher more higher ATPS are produced during ELECTRON TRANSPORT CHAIN REACTION per molecules of tryglycerides metabolize compare to molecules of glucose because the longer chains of lipids ensures that more C-H bonds broken down ,ans therefore more oxidation to supply protons for ATPS synthesis from.proton pumps.

6 0
3 years ago
Read 2 more answers
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