What is the difference between a primary and a secondary source?
A) A primary source is the original material published by the scientists, whereas a secondary source is a description of the original material.
B) A primary source is the raw data before scientists publish, whereas a secondary source is a description of the original material.
C) A primary source is the original material published by the scientists, whereas a secondary source is the raw data before scientists publish.
D) There is no difference between primary and secondary sources.
A
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The Krebs cycle runs
A. three times for each glucose, to power the electron transport proteins in hydrogen transport. B. twice, once for each acetyl CoA that was formed from the glucose molecule. C. 12 times for each glucose, because all of these processes are associated with the Krebs cycle. D. once for each glucose consumed, to rearrange the molecule prior to ADP production. E. six times for each glucose, because each carbon pulled from the original molecule will power the Krebs cycle.
Nitrification
a. converts ammonium into nitrates. b. reduces nitrates to nitrites. c. converts nitrogenous compounds into free nitrogen. d. converts atmospheric nitrogen to ammonia. e. reduces ammonia to ammonium
Organisms that produce beta-lactamase can be considered resistant to all of the following antibiotics EXCEPT:
A. ampicillin B. amoxicillin C. penicillin D. vancomycin
Which of the following statements about the classical pathway of complement activation is FALSE?
A) C1 is the first protein activated in the classical pathway. B) The C1 protein complex is initiated by antigen-antibody complexes. C) C3 is not involved in the classical pathway. D) Cleaved fragments of some of the proteins act to increase inflammation. E) C3b causes opsonization.