Which of the following sensory receptors is incorrectly paired with its category? a. hair cell - mechanoreceptorb. snake pit organ - thermoreceptorc. taste receptor - chemoreceptord. olfactory receptor - electromagnetic receptor

Olfactory receptor - electromagnetic receptor

Explanation:

Olfactory receptors (smell receptors, odorant receptors) are chemoreceptors, responsible for the detection of  smell. Olfactory receptors are located in the olfactory receptor cells (neurons) in the nasal cavity. Odor molecules attach for the cilia, extensions of the olfactory receptor cells. As a consequence,  activated olfactory receptors start signal transduction and thus transmit information about odor to the brain.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

carbon atoms, hydrogen, oxygen, and nitrogen.