Answer:
Active uptake (which I think you mean active transport) is important when the concentration gradient is against that of a certain substance, so it doesn't cross the membrane through diffusion or passive transport. It is sometimes necessary if a substance needs to move across a membrane but can't do so due to electrical charge or that there is a substance on the other side of the membrane preventing diffusion.
Explanation:
Atropine would block the receptor called muscarinic acetylcholine receptors present in the eye.
Atropine is the Anticholinergic agent which is also known as parasympatholytics. The activity of neurotransmitters at the receptors leads to pupil constriction.
Atropine is used to block these receptors that allow the pupillary muscles to relax. This causes the dilation of the pupil.
Atropine is the mydriatics that is used for pupillary dilation to conduct a detailed examination of eye diseases.
without this medication, the pupil will only dilate in the darkness. However, doctors cannot examine the eye problems as there is darkness as they need light for checkups.
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If the problem is not addressed the world we become hot because of global warming.
three effective solutions would be a decrease in CO2, no more fossil fuels, and stop littering
