Hormones are chemical signals that stimulate specific target tissues. Their specificity is due to the presence of signal receiving ‘receptors’ only in the respective target tissues. Where are these receptors present in case of hormones of protein nature.

Q.

Hormones are called chemical signals that stimulate specific target tissues. Which is the correct location of these receptors in of protein hormones?

(a) Extra cellular matrix

(b) Blood

(c) Plasma membrane

(d) Nucleus

Q. Read the given paragraph and select the option that correctly fills the blanks in it.
Hormones produce their effect on target tissue by binding to specific _________A called hormone receptors located in the target tissues only. Water soluble hormones usually need _________B receptor that generate _________C messengers for regulating cellular metabolism. __________D soluble hormones can pass through cell membrane and bind to _________E receptors, mostly nuclear receptors. The hormone receptors complex enter the nucleus and mostly regulate gene expression or chromosome function by interaction of hormone-receptor complex with the genome.

Q. Hormone receptors present on the cell membrane of the target cells are called_____________ and the receptors present inside the target cell are called ____________.

Q. Hormones produce their effect on target tissue by binding to specific proteins called as-

Q. Pheromones are air-born chemicals that are sensed through olfaction. In deer, females release a sexually attractive pheromone during mating season that is sensed by male deer.
Why do only certain cells in the male deer receive pheromone signals, while the pheromones are exposed to all cells in the male deer?