Question

question 2 of 10
a child is born prematurely and experiences severe asthma. which substance most likely affected cell differentiation when the child was a developing embryo?
a. antibiotics
b. alcohol
c. radiation
d. cigarette smoke

Explanation:

Exposure to cigarette smoke during embryonic development can disrupt cell - differentiation and lead to respiratory problems like asthma in children. Antibiotics are mainly for treating bacterial infections and not typically associated with such long - term respiratory issues from embryonic exposure. Alcohol can cause fetal alcohol spectrum disorders but not primarily asthma - related cell - differentiation problems. Radiation can cause genetic mutations and cancer risks, not specifically severe asthma from cell - differentiation issues related to this context.

Answer:

D. Cigarette smoke