Nitrogen Dioxide (NO₂) Is

Q7: PCBs, or polychlorinated biphenyls,<br>A)are used today extensively

Q8: Nerve cells (neurons) are connected by<br>A)cilia<br>B)ligaments<br>C)gaps or

Q9: The insecticides parathion and malathion interfere with

Q10: Neurotoxins interfere with the<br>A)Citric Acid cycle<br>B)Krebs cycle<br>C)Acetylcholine

Q11: The insecticide DDT (p-dichlorodiphenyltrichloroethane) is<br>A)highly toxic to

Q13: British Anti-Lewisite (BAL) is able to react

Q14: Catalysts are substances which<br>A)slow down an undesired

Q15: Teratogens such as thalidomide can cause<br>A)birth defects<br>B)anemia<br>C)hepatitis<br>D)none

Q16: The lungs are protected from inhalation of

Q17: Catalysts in living organisms are called<br>A)placebos<br>B)positrons<br>C)enzymes<br>D)inhibitors