I say A they dont neither grow or lower. and if they do they go back to normal
True...................................
In prophase 1:
Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears.
In metaphase 1:
The pairs of chromosomes (bivalents) become arranged on the metaphase plate and are attached to the now fully formed meiotic spindle. The centrioles are at opposite poles of the cell.
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The effects of epinephrine are typically observed within 1 minute following administration.
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Explanation:</u></h3>
The chemical that is used for the purpose of making blood vessels to be narrower and opening the airways in the human lungs are the Epinephrine. This can be used for reversing the low BP, skin itching problems, reactions based on allergy, wheezing problems,etc.
The effects of this chemical will be observed within the period of 1 minute. It is also called as adrenaline which is a hormone released by the adrenal glands. The blood pressure, anger and fear are some of the things that are associated with the release of this hormone.
