Answer the following questions true (T) or false (F)
1. Molecular second-line defenses include cytokines, iron-binding proteins, and complement proteins.
2. Ferritin is a specific example of a siderophore produced by Borrelia bugdorferi.
3. Complement activation has three different outcomes but which outcome occurs depends on which complement pathway is activated.
1. TRUE
2. FALSE
3. FALSE
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The nucleocapsid is composed of
A. DNA and RNA and protein. B. DNA or RNA and protein. C. protein located in the nucleus. D. nucleic acid in the ribosome.
All coliforms can grow at 44.5° C.
Answer the following statement true (T) or false (F)
The ____ represent an internal respiratory system
a. skin folds on an amphibian b. broad, flat body of a flatworm c. branched gill filaments d. folds within human lungs e. gills on a salamander
In an experiment to track the movement of growth factor molecules from secretion to the point of receptor binding in a particular species of mammal, a student found a 20-fold reduction in mm traveled when in the presence of an adrenal hormone. This is in part attributable to which of the following?
A) The growth factor is a paracrine signal. B) The growth factor depends on osmosis. C) The mammal only carries growth factor through the lymph. D) The growth factor is an exocrine signal. E) The growth factor is an endocrine signal.