How would you expect the root system of a plant grown by hydroponics to compare to the root system of a plant grown in soil?
A) absent
B) less developed
C) more developed
D) the same
Answer: B) less developed
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Phagocytes have a pathogen-recognition system known as ________ that leads to the recognition, containment, and destruction of a pathogen
A) collagen B) fibrin C) pattern recognition receptors (PRR) D) pathogen associated molecular pattern (PAMP)
Which of the following sigma factors would be expected to associate with RNA polymerase after increasing the incubation temperature of an E. coli culture from 30°C to 42°C?
A. ?28 B. ?32 C. ?38 D. ?42 E. ?54
What term describes an innate response to a simple and specific stimulus?
a. imprinting b. instinct c. learned behavior d. habituation e. a conditioned response
The spirochete of relapsing fever changes cell surface antigens many times in order to avoid destruction by the immune response.
Answer the following statement true (T) or false (F)