Activated when they recognize small components of antigens
Explanation:
The gustatory system is the sensory system of taste. ... The taste receptors, which are sensitive to five taste sensations (sweet, sour, salty, bitter, and umami), convert the chemicals from food into neural signals that are then carried to the thalamus before being relayed to the gustatory cortex in the frontal lobe.
Answer:
To be put simply, bacteria can be on things that are used quite often such as toilet seats, television remotes etc. If someone does something dirty such as plant seeds in dirt and not wash their hands, the next thing they touch will have bacteria on it. If you touch what has this bacteria on it, it stays on your hand. But if you wash your hands it will be gone, but if you touch your face, mouth, nose or eyes it will travel inside you, causing harm if it is a very bad type of bacteria.
