A small amount of antigen is injected under the skin of a patient. After 30 minutes there is no apparent change at the injection site, but 36 hours later the patient reports that the area is red and swollen. This type of response is due to
A) type I hypersensitivity.
B) type II hypersensitivity.
C) type III hypersensitivity.
D) type IV hypersensitivity.
E) immunodeficiency.
D
Biology & Microbiology
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Pseudopodia are used by Amoeba for ingesting food as well as for:a
reproduction. b. excretion. c. digestion. d. movement. e. avoiding predation
Biology & Microbiology
Animals that consume Brazil nuts derive nutrition mostly from tissue whose nuclei have how many chromosomes?
A) 17 B) 34 C) 51 D) 68
Biology & Microbiology
The behavior of parental care exhibited by dinosaurs is thought to be ________ to this behavior in crocodiles and birds because phylogeny shows that these three groups share a common ancestor.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Segmentation was first apparent in the
A. annelids. B. vertebrates. C. chordates. D. flatworms.
Biology & Microbiology