Legionella pneumophila Is
A. requires special lab growth media.
B. often lives in close associations with amebas.
C. causes fever, cough, and diarrhea.
D. causes a severe pneumonia.
E. All of the choices are correct.
Answer: E. All of the choices are correct.
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Which of the following is true regarding anabolic steroids?
A. Anabolic steroids were first developed by pharmaceutical companies in the late 1800s for the treatment of diseases associated with muscle wasting. B. Anabolic steroids are developed from estrogen, the female sex hormone. C. Because the use of anabolic steroids is illegal without a prescription, the purchase of these compounds has decreased over the past twenty years. D. Anabolic steroids have been found to cause few side effects and do not pose a serious health risk. E. Anabolic steroids increase muscle mass and are thought to help improve athletic performance.
Answer the following statements true (T) or false (F)
1. Animal biomass exceeds plant biomass in most ecosystems. 2. The amount of CO2 in the atmosphere is stable over a period of one year. 3. Insect densities tend to decrease in elevated CO2, all other factors being equal. 4. Biomagnification results in an increased concentration of bioaccumulated chemicals as one moves from upper to lower trophic levels.
The bulbourethral glands secrete a fluid containing fructose and prostaglandins
____________________ Indicate whether the statement is true or false.
What type of plant would be least affected by the loss of the guard cell function that closes stomata?
A. a carnivorous plant B. a desert plant C. a rainforest plant D. a plant from the plains of the American midwest E. a poisonous plant