E. coli is the most common cause of ________
A) kidney stones
B) hypospadias
C) renal failure
D) urinary tract infections
D
Explanation: A) E. coli does not cause kidney stones.
B) E. coli does not cause hypospadias.
C) E. coli does not cause renal failure.
D) Correct! E. coli is a bacterium that is present in the intestines and can enter the urethra.
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0100 to 1200 hours is:
A) 1:00 P.M. to 12:00 midnight. B) evening. C) afternoon. D) 1:00 A.M. to 12:00 noon.
T-cell activation requires antigen being displayed in the context of an APC and interaction between co-stimulatory molecules on the APC and the T cell
In addition to these two signals, T-cell activity is often influenced by cytokines. Which of the following is an example of how cytokines can influence T-cell activity in the presence of MHC presentation and co-stimulatory ligand interaction? A. CD28 causes memory NK cells to be produced. B. CD8 triggers apoptosis in T cells that recognize self-antigens. C. IL-2 triggers T-cell proliferation. D. Opsonins recruit eosinophils to present carbohydrate antibodies to naïve TC cells. E. TNF-? increases the production of IgM by activated T cells.
Which form of cannabis is mainly found in Northern Europe and parts of Asia?
A. Ruderalis B. Sativa C. Indica D. Sinsemilla
Which of the following provides a ready source of energy for daily activities?
A) carbohydrates B) proteins C) fats D) water