When a B cell contacts a foreign or abnormal antigen, it develops into a ________ that releases ________.
A) macrophage : histamine
B) macrophage : antibodies
C) plasma cell : histamine
D) natural killer cell : antibodies
E) plasma cell : antibodies
Ans: E) plasma cell : antibodies
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In meiosis, homologous chromosomes separate in ____
a. metaphase I b. anaphase I c. metaphase II d. anaphase II e. telophase
You want to experimentally test the deep sea vent hypothesis in a laboratory. What would your experimental set up need to include? Select all that apply.
_____ Hot H2S from the "vent" mixing with cold water. _____ Cold O2 from the "vent" mixing with superheated water. _____ A buildup of radioactive substances around the "vent". _____ Hot water around the "vent" containing metal ions.
The term development refers to all the changes that occur during the life cycle of an organism
__________________ Indicate whether the statement is true or false.
Most of the normal microbiota of the digestive system are found in the
A) mouth. B) stomach. C) stomach and small intestine. D) small intestine and large intestine. E) accessory structures.