The DNA in some lung cells was damaged by the carcinogenic compounds in tobacco and apoptosis was initiated. Which of the following is the best way for the damaged lung cells to send a message to their neighboring cells that
they need to increase the production of DNA repair enzymes or start apoptosis as well?
O They should send signaling molecules into the bloodstream
O They should send signaling molecules through the gap junctions.
O They should send signaling molecules across a small extracellular space.
O They should send signaling molecules by secreting them into the local environment

b is the correct answer

silt loam

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osteogenesis imperfecta (oi) refers to a congenital ailment of bones. in the condition, the bones become brittle or fragile. this ailment is a general result of the defect or mutations in the genes (colia1 or colia2). this mutation results in imperfect collagen formation either in quantity or quality wise.  

there are eight kinds of oi defects, and each kind varies with certain distinctions in symptoms. the usual symptoms include frequent bone fractures, loss of hearing in infants, protruding eyes, discoloration of the white in the eyes, respiratory issues, loosening of the joints, short stature, and other symptoms.