Answer:
<u>Methamphetamine</u> is a stimulant that provides an intense high and causes a reduction in the brain's baseline dopamine levels.
Explanation:
Methamphetamine is a drug of abuse, belonging to the amphetamine family, this psychostimulant compound, produces effects such as euphoria and increased energy and concentration. In the long term, when it's consumed chronically, it has other effects, especially at the level of the CNS, such as the decrease in the volume of the hippocampus, producing memory losses associated with the hippocampus and decreased neurogenesis in adults. Dopamine (DA), by acting as a neurotransmitter, it is able to increase neurogenesis in certain areas and decrease it in others. Given the acute intake of methamphetamine, there is an increase in the concentrations of dopamine and serotonin (5-HT), because methamphetamine acts as a substrate for the transporters of dopamine transporter (DAT) and serotonin transporter, therefore reducing the transport of both neurotransmitters.
When there is a chronic methamphetamine consumption, there is a decrease in the concentrations of basal levels of dopamine in the striatum, hippocampus and prefrontal cortex, which is maintained in the long term. It also not only decreases cell proliferation, but also decreases neuronal differentiation and maturation of progenitor cells.
Maybe because food was here before the population even started to grow?♀️
Answer:
The correct order is F, E, C, G, H, A, D, and B (look at the image in the attached files)
Explanation:
- <u>Interphase</u><u>:</u> Stages G1, S, and G2. At this point probably, the chromatin duplication has already occurred, but it is still lax or dispersed. It has not condensed yet. Two pairs of centrioles are outside the nucleus (FIGURE F)
- <u>Prophase</u>: Centrioles move forward to the opposite poles of the cell. Chromatin is condensed and individual chromosomes are now visible. The nuclear membrane breaks into many pieces. Spindle apparatus -microtubules- forms. (FIGURE E)
- <u>Metaphase:</u> The polar and the kinetochore fibers drive each individual chromosome to the equatorial plane. This stage ends when all the chromosomes are completely arranged in the medial area. (FIGURE C)
- <u>Anaphase</u>: Sister chromatids separate and move to the opposite poles of the cells, driven by the microtubules. In each pole, there are a pair of centrioles (FIGURE G and H).
- <u>Telophase</u>: The nuclear membrane rearranges. Each sister chromatid becomes now a new chromosome. There is a pair of centrioles outside each of the nuclei. (FIGURE A)
- Cytokinesis occurs at the end of the cell division. The rest of the cell is divided into two new daughter cells. Each daughter cell is an identical copy of the other cell, with the exact same genetic material (FIGURE D).
- Decondensation of the genetic material of each new cell (FIGURE B).
The answer is Atom.
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