Answer the below first ten questions as True (A) or False (B). (LO6) 1. Blood brain barrier is very well developed at birth, and thus xenobiotics could not be toxic to newborns. (A) (LO6) 2. Organic-anion transporter (OAT) andorganic-cation transporter (OCT) are important in the renal and hepatic uptake of xenobiotics. (A) (LO9) 3. A complete carcinogen is a chemical having the ability of inducing cancer from normal cells, usually posessing properties of initiation, promotion and progression. (LO9) 4.Several exposures to an initiator may not result in tumor without presence of a promoter. (LO9) 5. Necrosis is an active form of cell death induced by accidental damage of tissue and involve activation of any specific cellular program. (LO11) 6. Gastric lavage is effective in decreasing ingestant absorption significantly if performed within 6 hrs of ingestion.