What is the time from the final frost in the spring to the first frost in the fall?
A) transpiration
B) hardiness
C) a growing season
D) translocation
C
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In recombinant DNA technology, enzymes used to precisely cut DNA are called
a. DNA ligases. b. restriction enzymes. c. DNA polymerases. d. RNA polymerases. e. vectors.
All BUT which of these genotypes is a possible F1
gamete for a dihybrid cross between AA BB with aa bb? a. Aa b. Ab c. AB d. aB e. ab
Which of the following convert soil ammonium to nitrate?
A) nitrifying bacteria B) ammonifying bacteria C) mycorrhizae D) nitrogen-fixing bacteria
What is the result when a dendritic cell phagocytizes a microbe and processes it?
A. activation of the dendritic cell to become a plasma cell B. display of epitope-MHC I complexes on the surface of the cell C. suppression of the immune response to the microbe D. display of microbial fragments with CD8 glycoproteins E. display of microbial epitope-MHC II complexes on the cell surface