Toxicology

• Zootoxins refer to toxic substances produced by:

  Animals
• Phytotoxins are toxic substances produced by:

  Plants
• Which branch of toxicology is concerned with the study of toxic effects of various drugs in the body, as well as the treatment and prevention of drug toxicity?

  Clinical Toxicology
• Bacteriotoxins are poisonous substances produced by:

  Bacteria
• Definition of codon

  A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis
• Describe hormesis and give one example of a toxicant that exhibits theproperty

  Alcohol small quantities are beneficial for the organism (positive effects oncardiovascular system)
• What is toxicity

  The adverse effects that a chemical may produce
• What is dose

  The amount of a chemical that gains access to the body
• What is hazard

  The likelihood that the toxicity will be expressed
• What does not effect the amount of toxicant entering the body?

  The health of the host
• What mechanism is not involved in gene expression

  Regulation of replication
• What are the 3 mechanisms involved in the regulation of gene expression

  Regulation of chromosome condensationRegulation of mRNA degradationRegulation of protein degradationRegulation of translation
• The genetic code is degenerate but not ambiguous. What does this mean

  More than one codon may specify a particular amino acid, howeverno codon specifies more than one amino acid
• What is toxicology


  The study of the effects of poisons