Respiration occurs at which of the following structures of the respiratory system? a) alveolar ducts
b) alveoli
c) bronchioles
d) lungs

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria