The distinct archaeal gene versions of Thaumarchaeota that oxidize ammonia into hydroxyl-amine (NH2OH) is catalyzed by _________.
A. methylaspartate pathway (MAP)
B. ammonia monooxygenase (AMO)
C. methanofuran (MFR)
D. ammonium dismutase (ADM)
Answer: B
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What causes rejection by the body's immune system after a transplant of an improperly matched organ?
I) non-self proteins in the tissue II) the presence of foreign major histocompatibility complex (MHC) proteins on the donor tissue III) antibodies and cytotoxic T lymphocytes (CTLs) responding to foreign tissue A) only I and III B) only II and III C) only I and IIII D) I, II, and III
The retina contains light sensitive cells
____________________ Indicate whether the statement is true or false.
Living cells maintain biochemical reactions far from equilibrium conditions. They do this by constantly manipulating
the concentrations of reactants and products. Why is it important that a state far from equilibrium be maintained? What will be an ideal response?
Which of the following is the mechanism of action of cyclosporine?
A. It blocks the complement cascade. B. It blocks the activity of activated Th1 T cells. C. It directly blocks CTL activity. D. It interferes with activation of Th2 T cells. E. It is an anti-inflammatory interfering with leukotriene function.