Which of the following is not something that causes guard cells to close?
A. too little water in the leaf
B. too much CO2 in the leaf
C. presence of abscisic acid
D. too little CO2 in the leaf
E. too much water vapor outside the leaf
D
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Would antibodies produced by a patient in response to infection be monoclonal, or polyclonal?
monoclonal. B. Since a single pathogen has multiple antigens, and each antigen has multiple epitopes, the responding antibodies to a whole pathogen would be polyclonal. C. Since the pathogen would most likely mutate slightly during the infection (producing different epitopes), the responding antibodies would be polyclonal. D. Since the pathogen would acquire and modify self-antigens during the infectious process, the antibodies produced during the response would be polyclonal.
Bergey's Manual of Systematic Bacteriology contains
A) classification schemes for prokaryotes. B) treatments for bacterial diseases. C) a complete list of all bacterial species. D) genetic sequences of all known prokaryotes. E) rules for naming new bacterial species.
Evolution of the globin gene family has been characterized by
a. duplication and divergence of genes. b. fusion of exons. c. duplication of gene clusters. d. mutations creating pseudogenes. e. All of the above.
What reactions is synonymous with catabolism?