Answer:hope it helped written by akashaplz mark it brainlist
Explanation:
so i will tell everyone that there was fire for 4 hours and no rescue team were there the fire was blown by a tourist that took the life of 100 animal so as everyone can see the plant are finished everywhere there is only ash and flash of animal .i want to tell the visitors that the rescue was near but they don't show action , as earth is home to many living organism so it is animal right to live in forest and it a request everyone should come and plant seeds so we can recover the forest
<span>to bind to surface molecules present on pathogens</span>
Answer:
the correct sequence of the events happened during nerve impulse is (d): 2,1,4,3
Explanation:
Originally K+ ions remains inward the membranes while Na+ ions remains outward to maintain a resting potential of membrane.
Upon stimuli Sodium channels open on membrane and Na+ diffuses inward leading to the depolarization of membrane that is it becoming more positive due to Na+ and K+ ions.
To regain it polarized state or in repolarization state Potassium channels open and K+ begun to diffuse outward while Sodium channels gets closed and Na+ ions remains inside the membrane.
Potassium channels are not efficient as compared to Sodium Channels, so an excess amount of K+ion move outward so Hyperpolarization state achieved.
As the both ions are on the wrong side and will not be available for the next nerve impulse. Hence in Refractory period by the help of Na+/K+ pum, both ions move back to their original place and membrane achieve its resting membrane potential state.
Answer:
WHEN LIGHT IS PUT INSIDE THE EYE THE PUPIL SHRINKS DUE TO THE COMMAND OF BRAIN
<span>Fireflies
use the bioluminescence to attract mates for mating hence key in reproduction.
Therefore, beetles from different species should have different lighting
patterns so that they can only attract mates of the same species. This would
avoid interspecies mating which would probably involved expending energy in
produce nonviable offspring which is inefficient (hence will be unfavoured
natural selection). </span>