Which tissue lines blood and lymph vessels?
a. A
b. B
c. C
ANSWER: a
Biology & Microbiology
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The first commercial product made with recombinant DNA techniques was ____________________
Fill in the blank(s) with correct word
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What is the primary cell type associated with a cell-mediated immune response?
a. B cells b. Macrophages c. Helper T cells d. Mast cells e. Cytotoxic T cells
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The TCA cycle is known as the ____ cycle
Fill in the blank(s) with the appropriate word(s).
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The black-bellied seedcrackers of Cameroon
a. have bills either 12 or 15 mm wide. b. use both hard and soft seeds during the wet season c. sustain intense competition for scarce seeds during times of drought. d. provide an example of disruptive selection. e. fit all of these descriptions.
Biology & Microbiology