If you were analyzing tree rings how might you distinguish between fires that occurred in the spring
versus fires that occurred in the summer, assuming the fires left fire scars?
What will be an ideal response?
A spring fire would damage “spring wood” and a summer would damage “summer wood”. These
portions of an annual tree ring are distinguished by either being a light band, spring wood, or a dark
band, summer wood.
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Chlorinated xenobiotics can ONLY be degraded aerobically, thus making them very recalcitrant if they accumulate in anoxic environments
Indicate whether the statement is true or false.
When epidermal growth factor binds to its _____________, the receptor phosphorylates itself, triggering a signal transduction pathway.
A. thermoreceptor B. G-protein coupled receptor C. mechanoreceptor D. ligand-gated ion channel receptor E. enzyme-linked receptor
Synapsis refers to the ____
a. crossing-over between homologous chromosomes b. alignment of homologous chromosomes along the equatorial plane c. alignment of sister chromatids along the equatorial plane d. pairing of homologous chromosomes during prophase I e. pairing of sister chromatids during prophase II
Anti-human antibodies (specific for human IgG antibodies) with fluorescent molecules covalently attached are used for
A. direct fluorescent antibody tests. B. indirect fluorescent antibody tests. C. direct ELISAs. D. indirect ELISAs. E. immunodiffusion tests.