A6-year-old child ate a peanut butter sandwich
at snack time in school. five minutes later, her
throat became swollen and she collapsed. this
allergic reaction occurred because her body
(1) recognized an antigen in peanut butter and
produced antibiotics against it
(2) digested the white blood cells that can
recognize an antigen in peanut butter
(3) did not recognize an antigen in peanut
butter and could not produce antibodies
against it
(4) recognized an antigen in peanut butter and
produced an immune response

Which is true of the regious near earth equator

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed