What tissue in vascular plants would be used to move sugars from roots to the stems and leaves, and
from leaves to roots and stems?
a. sclerenchyma
b. phloem
c. collenchyma
d. parenchyma
e. xylem
B
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During the biotransformation of a large molecular weight compound, two major products are formed. While one of the products is catabolized, the other compounds accumulation represses the biotransformation of the large compound
Which approach is MOST likely to artificially enhance the biotransformation beyond this point in a batch culture? A) addition of an isoenzyme for the biotransformation route to increase its transcription B) addition of inducer molecules into the medium to increase transcriptional repression C) inclusion of more of an intermediate compound in the catabolic pathway D) spike in additional activator proteins that control the transcription of this pathway
The process by which cells acquire specialized forms and functions is called
A. cell growth. B. cell elasticity. C. cell differentiation. D. cell replication. E. None of the choices are correct.
Which is the first antibody class made during the primary response to an antigen?
A. IgA B. IgM C. IgG D. IgE
In an experiment, the control group:a
disproves the theory. b. proves the hypothesis. c. proves the prediction. d. does not contain the variable being tested. e. is similar to the test group in all aspects including the variable being tested.