Pathogenic Bacteria. Pathogenic bacteria (bacteria capable of causing disease) because they release chemicals called toxins. Toxins are classified as either endotoxins or exotoxins. Endotoxins produce toxic substances which are stored in their cell walls and released when the bacterial cells are lysed (broken open).athogenic bacteria (bacteria capable of causing disease) because they release chemicals called toxins. Toxins are classified as either endotoxins or exotoxins.
Ty Cobb. Ty Cobb is arguably the greatest baseball player who ever put on spikes. During his 24-year career, he established records in virtually every area of the offensive game. His .367 lifetime average stands as the best in baseball history, a virtually unattainable goal for hitters.
A thagomizer is the distinctive arrangement of four to ten spikes on the tails of stegosaurid dinosaurs. These spikes are believed to have been a defensive measure against predators. The name was coined by cartoonist Gary Larson in a 1982 comic strip, and has been used in research and education since then.