Gram staining of the patient's samples would help to identify which type of pathogens?
A. bacteria
B. prions
C. viruses
D. fungi
Answer: A. bacteria
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Knowledge of a pathogen's genome is useful because:
A. It allows scientists to cause mutations in the DNA thereby killing the pathogen. B. It allows scientists to prevent meiosis and the duplication of genes necessary for the survival of the pathogen. C. It allows developing drugs that make antibodies against the pathogen. D. It allows developing drugs that target metabolic pathways unique to the pathogen. E. none of the choices provided
Proto-cells are considered to have
a. been simple membrane-bound sacs. b. been able to capture energy. c. been able to engage in metabolism. d. been able to reproduce. e. all of these.
Which of the following would increase blood flow through a capillary bed?
A) contraction of precapillary sphincters in the capillary bed B) contraction of smooth muscle in the metarterioles bypassing the capillary bed C) constriction of the arteriole leading into the capillary bed D) decrease in blood pressure in the arteriole leading into the capillary bed E) increase in venous pressure
Ovulation is triggered by ____
a. high levels of LH b. low levels of LH c. low levels of estrogen d. high levels of estrogen e. high levels of progesterone