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TLS Online TPP Program

#Question id: 11995

You are working for the Environmental Protection Agency and researching the effect of a potentially toxic chemical in drinking water. There is no documented scientific evidence showing that the chemical is toxic, but many suspect it to be a health hazard. Using the precautionary principle, what would be a reasonable environmental policy?

#Unit 10. Ecological Principles
  1. Establish no regulations until there are conclusive scientific studies.
  2. Set the acceptable levels of the chemical conservatively low,  and keep them there unless future studies show that they can be safely raised.
  3. Set  the  acceptable levels  at  the  highest levels  encountered, and  keep  them  there  unless future  studies demonstrate negative health effects.
  4. Caution  individuals  to  use  their  own  judgment  in  deciding  whether  to  drink  water  from  a  potentially contaminated area
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TLS Online TPP Program

#Question id: 11946

#Unit 7. System Physiology – Animal

A 3-week-old infant is brought to the emergency room in a comatose condition. The history reveals that her parents have been feeding her concentrated, undiluted formula for 5 days. (Infant formula preparations are often sold in concentrated forms that must be properly diluted with water before feeding.) The infant’s plasma osmolality is 352 mOsm/L (normal is 280 to 300 mOsm/L), and the osmolality of the urine is 497 mOsm/L. What is the explanation for the hyperosmotic condition of the plasma?
TLS Online TPP Program

#Question id: 11947

#Unit 7. System Physiology – Animal

Why is milk produced only after delivery, not before?
TLS Online TPP Program

#Question id: 11948

#Unit 7. System Physiology – Animal

Which of the following increases the rate of excretion of calcium ions by the kidney?
TLS Online TPP Program

#Question id: 11949

#Unit 7. System Physiology – Animal

If a woman has a tumor secreting large amounts of estrogen from the adrenal gland, which of the following will occur?
TLS Online TPP Program

#Question id: 11950

#Unit 7. System Physiology – Animal

In a normal young man, what is the maximum pressure that can be achieved within the corpora cavernosa during a sexual experience?
TLS Online TPP Program

#Question id: 11951

#Unit 7. System Physiology – Animal

Very early in embryonic development, testosterone is formed within the male embryo. What is the function of this hormone at this stage of development?