Quadratic model Whiteboard exercise Play

Quality check Animation Play

Quaternary ammonium salts Student activity Play

Random sampling Animation Play

Random sampling, qualitative qualities Student activity Play

Ratio in the class Animation Play

Recombination in bacteria Animation Play

Recombination in bacteria Student activity Play

Recombination of genetic material in bacteria Whiteboard exercise Play

Removal of inorganic salts from wastewater Animation Play

Removal of the spores of Clostridium botulinum from food Slideshow Play

Repeated percentage change Class activity Play

Repeated percentage change Whiteboard presentation Play

Reproduction and genetic recombination in bacteria Student activity Play

Reproduction and genetic recombination in bacteria Whiteboard exercise Play

Reproduction in bacteria Animation Play

Reproduction in bacteria Animation Play

Reproduction of bacteria by binary fission Animation Play

Reproductive isolation Slideshow Play

Role of bacteria in digestion and in the production of vitamins Student activity Play

Role of bacteria in digestion and in the production of vitamins Whiteboard exercise Play

Role of bacteria in the large intestine Slideshow Play

Salmonella and food poisoning Student activity Play

Salmonella – pathogenicity and prevention of infection Slideshow Play

Sampling frame Animation Play