The retina is a photosensitive tissue that contains the special photoreceptor cells. what is the purpose of these photoreceptor cells?

question 19 options:

to convert light to electrical impulses

to invert the image right-side up again

to focus light waves on the back wall of the eye

to convert black and white into color

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.