Podcast
Questions and Answers
What is the half-life of the radioactive isotope 137Cs, which is similar to potassium in its behavior?
What is the half-life of the radioactive isotope 137Cs, which is similar to potassium in its behavior?
- 30 years (correct)
- 50 years
- 15 years
- 100 years
Compared to the Chernobyl disaster, what is the order of magnitude of the releases of iodine-131 and caesium-137 from Fukushima?
Compared to the Chernobyl disaster, what is the order of magnitude of the releases of iodine-131 and caesium-137 from Fukushima?
- One-tenth
- Ten times
- The same (correct)
- One hundred times
What is the primary factor that affects the absorption of substances in the gastrointestinal tract?
What is the primary factor that affects the absorption of substances in the gastrointestinal tract?
- pH
- Motility and mixing in the GI tract
- Lipid solubility (correct)
- Disintegration of dosage form
What is the main reason for the rapid absorption of gases, vapors, and volatile liquids in the lungs?
What is the main reason for the rapid absorption of gases, vapors, and volatile liquids in the lungs?
What must substances cross to reach blood vessels in the skin?
What must substances cross to reach blood vessels in the skin?
What is the minimum distance from the Fukushima plant where radioactive caesium levels have been reported to be high enough to cause concern?
What is the minimum distance from the Fukushima plant where radioactive caesium levels have been reported to be high enough to cause concern?
What is the primary factor that determines the rate of passive diffusion across a cell membrane?
What is the primary factor that determines the rate of passive diffusion across a cell membrane?
What is the characteristic of a chemical that allows it to diffuse through the lipid bilayer of a cell membrane?
What is the characteristic of a chemical that allows it to diffuse through the lipid bilayer of a cell membrane?
Which type of transport is characterized by the movement of molecules along a concentration gradient without the use of energy?
Which type of transport is characterized by the movement of molecules along a concentration gradient without the use of energy?
What is the minimum molecular size required for a molecule to move through cell pores?
What is the minimum molecular size required for a molecule to move through cell pores?
What is the characteristic of a molecule that is a substrate for facilitated transport?
What is the characteristic of a molecule that is a substrate for facilitated transport?
What is the primary difference between active transport and facilitated transport?
What is the primary difference between active transport and facilitated transport?
Which of the following xenobiotics is sequestered in adipose tissue as depot stores?
Which of the following xenobiotics is sequestered in adipose tissue as depot stores?
What is the primary target tissue for blood lead toxicity?
What is the primary target tissue for blood lead toxicity?
What is the mechanism by which lead is sequestered in growing bone?
What is the mechanism by which lead is sequestered in growing bone?
What is the effect of pregnancy and breast feeding on sequestered organochlorine compounds?
What is the effect of pregnancy and breast feeding on sequestered organochlorine compounds?
Which of the following xenobiotics produces effects on the nervous tissue?
Which of the following xenobiotics produces effects on the nervous tissue?
What is the primary factor affecting absorption through endothelial pores into the circulation?
What is the primary factor affecting absorption through endothelial pores into the circulation?
What is the common characteristic of xenobiotics that produce effects on specific body tissues or organs?
What is the common characteristic of xenobiotics that produce effects on specific body tissues or organs?
What is the bioavailability of a drug administered intravenously?
What is the bioavailability of a drug administered intravenously?
Which of the following routes of exposure has the largest surface area?
Which of the following routes of exposure has the largest surface area?
What is the primary reason for the low bioavailability of lidocaine?
What is the primary reason for the low bioavailability of lidocaine?
What is the main purpose of understanding the extent of absorption and bioavailability?
What is the main purpose of understanding the extent of absorption and bioavailability?
What is the term for the process by which a drug is destroyed in the gut and liver before reaching the systemic circulation?
What is the term for the process by which a drug is destroyed in the gut and liver before reaching the systemic circulation?
What is the primary mechanism for the excretion of water-soluble toxicants from the body?
What is the primary mechanism for the excretion of water-soluble toxicants from the body?
What is the function of the liver in the elimination of toxicants?
What is the function of the liver in the elimination of toxicants?
Which of the following is NOT a major route of elimination for toxicants?
Which of the following is NOT a major route of elimination for toxicants?
What is the term for the process by which lipid-soluble toxicants are reabsorbed into the bloodstream?
What is the term for the process by which lipid-soluble toxicants are reabsorbed into the bloodstream?
Which of the following is an example of active transport in the elimination of toxicants?
Which of the following is an example of active transport in the elimination of toxicants?
Why is mother's milk an important route of elimination for toxicants?
Why is mother's milk an important route of elimination for toxicants?
What is the primary mechanism for the excretion of gases and volatile liquids from the body?
What is the primary mechanism for the excretion of gases and volatile liquids from the body?
What is the significance of the molecular weight of a toxicant in determining its route of elimination?
What is the significance of the molecular weight of a toxicant in determining its route of elimination?
Which of the following is a minor route of elimination for toxicants?
Which of the following is a minor route of elimination for toxicants?
What is the term for the process by which toxicants are changed from lipid-soluble to more water-soluble forms?
What is the term for the process by which toxicants are changed from lipid-soluble to more water-soluble forms?
