Biochemical Mechanism of the Smell of Death | How do Bodies Decay?

The video explores the molecular basis of the smell of death, focusing on the stages of decomposition and the role of bacteria in producing foul-smelling compounds. It covers four key molecules: cadaverine, putrescine, indole, and skatole, explaining their origins and contributions to the odors associated with decaying bodies. The video also touches on the decomposition process, from the fresh stage to advanced decay, highlighting the role of bacterial metabolism in these transformations.

What is the first stage of decomposition called?

• Advanced decay

• Fresh stage

• Bloated stage

• Active decay

During which stage do bacteria produce gases that can cause large organisms to explode?

• Bloated stage

• Advanced decay

• Active decay

• Fresh stage

What happens to the body during the active decay stage?

• It turns into bones

• It becomes unrecognizable

• It starts to bloat

• It remains fresh

Which molecule is responsible for the smell of rotting flesh?

• Indole

• Cadaverine

• Skatole

• Putrescine

What is the primary source of cadaverine production?

• Bacterial activity

• Plant decay

• Animal respiration

• Human metabolism

Which enzyme converts tryptophan into indole?

• Indole pyruvate decarboxylase

• Lysine decarboxylase

• Tryptophanase

• Ornithine decarboxylase

What is skatole also known as?

• Methyl indole

• Indole acetate

• Indole pyruvate

• Indole acetaldehyde