400 500 600 700 Wavelength (nm)

After the reaction of 11-cis-retinal with opsin, classify the reaction rhodopsin undergoes in the presence of light to produce 11-trans-rhodopsin. (b) howmany hydrogens are present in 11-cis-retinal? (c) What arethe functional groups present in this molecule?

Explain the Cells of the Retina Contain Light-Sensitive Proteins?

11:21 AM Fri Jun 4 * 77% 4 YYY c) When the muscles connected to the crystalline lens relax, the focal length is 9.0000 cm. With this focal length, how close must an object be to form sharply focused images on the retina? (Note: this distance is called the near point of vision.) d) As people age, the crystalline lens hardens (a condition called presbyopia or "old-age" eyes) and can only vary in focal length from 12 to 15.60 cm. Calculate range of vision (the new near point and far point) for this older eye. e) Based on part d) why might an older person hold the newspaper at arm's length to read it? f) The iris of the eye serves two different purposes. First, the iris controls the total amount of light entering the eye so a person can see in varying light levels. Secondly, the iris blocks light from hitting the extreme edges of the crystalline lens. Why might an eye want to block the light hitting the extreme edges of a lens? What is the name for the effect when light does hit the edges…

The membrane potential of cells within the visual system is recorded in the dark, then following a brief flash of light. During the flash of light you would expect __________ cells to _____________       a   rod cell; hyperpolarize  b   bipolar cell; depolarize  c   ganglion cell; depolarize  d   all of the above are correct

Cells of the Retina ContainLight-Sensitive Proteins name them?

Name the colors in a color spectrum of visible light from low to high wavelength.

When moved from darkness to light, the potential generated in photoreceptors is a ___1.choose your answer___. Specifically, this potential change is brought on in part by the PDE break down of ___2.choose your answer___ to ____3.choose your answer___, which then causes the ___4.choose your answer___ of __5.choose your answer__ channels. 1.Hyper polarization or repolarization or depolarization 2.GMP or cGMP 3.cGMP or GMP 4.opening or closure 5.sodium or calcium or potassium

Which of the following CORRECTLY contrasts the stereocilia in the cochlea versus the stereocilia in the utricle? a). The stereocilia in the cochlea are surrounded by perilymph, whereas the stereocilia in the utricle are surrounded by endolymph. b). The stereocilia in the cochlea are surrounded by endolymph, whereas the stereocilia in the utricle are surrounded by perilymph. c). The stereocilia in the cochlea are embedded in a tectorial membrane whereas the utricle are embedded in a cupula.d). The stereocilia in the cochlea are embedded in a tectorial membrane whersas the stereocilia in the embedded in a cupula.

List any five aspects of the Human Eye that allow it to record images in the real world.