subject
Biology, 24.10.2019 23:43 reeseleprell4141

Every time a child visited a cousin who has two
cats, the child’s eyes turned red, itched, and
began to water. then, the child began to have
trouble breathing. it is most likely that the child
reacted this way because
(1) normally harmless cat antigens stimulated
the immune system
(2) it is difficult for the respiratory system to
filter cat antigens out of the inhaled air
(3) cat antigens are a health hazard, since they
always cause disease
(4) cat antigens stop the immune system from
making antibodies, so bacteria cause these
responses

ansver
Answers: 2

Another question on Biology

question
Biology, 22.06.2019 02:30
Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?
Answers: 1
question
Biology, 22.06.2019 07:00
About how much of the cell mass is watet
Answers: 1
question
Biology, 22.06.2019 08:20
Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.
Answers: 2
question
Biology, 22.06.2019 10:30
Most enzyme names end in the
Answers: 2
You know the right answer?
Every time a child visited a cousin who has two
cats, the child’s eyes turned red, itched, and...
Questions
question
Mathematics, 24.04.2020 05:37
question
Biology, 24.04.2020 05:37
question
Biology, 24.04.2020 05:37
Questions on the website: 13722360