Picky protozoa may sense poison in prey. (chemicals in marine algae may deter protozoan prey)

From: Science News | Date: June 28, 1997| Author: | Copyright information

Researchers have discovered that protozoa tend to avoid single-celled marine algae that produce the substrate dimethlysulfoniopropionate (DSMP), which reacts with an enzyme called DMSP lyase. Research indicates that DMSP lyase may function to protect the algae from predators.

When a person bites into horseradish, it bites back--producing a stinging sensation that deters many people from taking a second mouthful.

Activities like the chomping action of teeth destroy barriers inside a plant cell that keep certain enzymes and substrates separate. When mixed, these molecules produce ...

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