Question

1) which sensory receptor responds to two different sensory stimuli?

a) pacinian corpuscle

b) free nerve ending

c) olfactory receptor

d) visual receptor

2) When a beaker containing a non-diffusable molecule is connected to a beaker containing deionized water, what happens to the osmotic pressure in the beaker containing the non-diffusable molecule as the concentration of the non-diffusable molecule increases?
a) decreases
b) stays the same
c) increases
d) first it decreases and then increases rapidly.

Answer 1

ANSWER :

1. The free nerve endings are unspecified bare afferent nerve fibres present in the skin, which detect different types stimuli from the skin to sensory neurons, and work as thermoreceptor, cutaneous mechanoreceptor (touch, pressure, stretch), & nocioceptor.

2. The osmosis of water occurs from the solution of low solute concentration to the high solute concentration, because the solution of low concentration has less number of non-diffusible molecules that generate low osmotic pressure than the other solution. Hence if the concentrations of non-diffusible molecules would increased in the solution, it also increase the osmotic pressure in that.