Which of the following is associated with mucosa-associated lymph tissue that produces IgA?

A) breast milk
B) red blood cells
C) blood serum
D) small intestine


Answer: A

Biology & Microbiology

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Which of the following occurs for the production of a pollen grain from a microspore mother cell?

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Chlorophyll a molecules absorb ____ light

a. orange, green and yellow b. orange, purple and red c. red and yellow d. orange and blue e. purple, orange, and yellow

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The variable region of a light chain is indicated by

a. A. b. B. c. C. d. D. e. E.

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Soils of the tundra are very __________ due to __________

a. old; lack of precipitation b. young; lack of precipitation c. old; glaciation d. young; glaciation e. thick; high precipitation

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