Phylogenetic oligonucleotide arrays (POAs) contain rRNA sequences as probes and are used as a means to detect complementary rRNA sequences from the environment.
Answer the following statement true (T) or false (F)
True
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How is a T cell receptor similar to an IgM?
A. Both are produced by T cells. B. Both can bind to a specific antigen. C. Both are organized with variable and constant segments. D. Two answer options are correct: both can bind to a specific antigen AND both are organized with variable and constant segments.
Which process is performed by bacteria in mutualistic relationships with legumes?
a. ammonification b. biological magnification c. denitrification d. nitrification e. nitrogen fixation
Which of the labeled graphs above represents the age span of worker bees primarily occupied by
packing pollen?
a. A b. B c. C d. D e. E
The Krebs cycle requires
A. a four-carbon acid. B. coenzyme A (CoA). C. an acetyl group (2C). D. All of these answers are true.