Question

In vertebrates, each odorant receptor cell expresses only a single kind of odorant receptor protein.

a-true
b-false

Answer 1

Each odorant receptor cell in vertebrates has only one kind of odorant receptor protein, which makes it specialized to detect specific odorants.

Step-by-step explanation:

In vertebrates, it is indeed true that each odorant receptor cell expresses only one kind of odorant receptor protein. These receptor proteins are specialized and sensitive to specific odorants.

Each olfactory sensory neuron has cilia with one type of receptor, making the neuron specialized to detect particular odorants. This variety of receptors allows organisms to detect a wide array of smells. For instance, humans have around 350 olfactory receptor subtypes that combine in various ways to sense about 10,000 different odors.