Starting from the outside and moving in toward the center, which gives the correct order of tissues in
the stem of a young tree?
a. secondary phloem, primary phloem, primary xylem, secondary xylem
b. primary xylem, secondary xylem, secondary phloem, primary phloem
c. primary phloem, secondary xylem, secondary phloem, primary xylem
d. secondary phloem, primary xylem, secondary xylem, primary phloem
e. primary phloem, secondary phloem, secondary xylem, primary xylem
E
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How could telomerase inhibitors be used to treat cancer? What will be an ideal response?
Darwin's book in which he described his views on evolution is:
A. On the Origin of Species. B. Survival of the Fittest. C. On the Principle of Population. D. Principles of Geology.
Which virus type results in the immediate onset of cancer phenotype upon infection of a host?
A) retrovirus B) acute transforming retrovirus C) lentivirus D) adenovirus
A low intracellular concentration of fixed nitrogen (and high level of ?-ketoglutarate) in Anabaena activates the NtcA global regulator, which ultimately controls the activity of ________ and ________
a. nitrogen fixation / heterocyst formation b. photosynthesis / endospore formation c. nitrogen fixation / endospore formation d. photosynthesis / heterocyst formation