Please provide more information/context/clarification to help us answer this question. You can post your response in this answer text by clicking "Edit."
Antenae of insects are chemo- rerceptor , vibration receptors and thermo receptors .
in the medulla.
Hydrogen
A drop of blood in a large pool of water.
Actually it is the same. It depends on person to person so you can't differentiate between the two. It all depends on the chemo receptors and the response of the synapses.
You can find chemoreceptors in your tongue (taste buds) and in your olfactory system (your nose).
The type of receptors that sense touch on the skin are called mechanoreceptors.
Gustatory receptors are part of the sense of taste. They are in your mouth. Olfactory receptors are part of the sense of smell. They are in your nose.
Gustatory receptors are found on the tongue and pharynx and are taste receptors. They sense particles of foodstuffs dissolved in saliva and provide us with the sense of taste.
Chemoreceptors that regulate breathing are located in the carotid bodies near the carotid arteries in the neck and in the aortic bodies near the aorta in the chest. These receptors sense changes in oxygen, carbon dioxide, and pH levels in the blood and send signals to the brain to adjust breathing rate and depth accordingly.
Normally it's located on the exhaust manifold.
The skin has the most numerous receptors of any sense organ in the human body. These receptors can detect touch, pressure, temperature, and pain.