You submitted this quiz on Sat 10 May 2014 5:59 PM CDT. You got a score
of 15.00 out of 17.00.
Question 1
What is the view that sees vision as something that comes from the scene and enters the eye?
Your Answer
Score
Emission Theory
Theory of Vision
Extramission Theory
Intromission Theory
Correct
Total
1.00
1.00 / 1.00
Question 2
Alhazen is significant because:
Your Answer
He was the first to dissect an eye
He argued convincingly that vision involves light and that light enters the eye
rather than vice versa
Correct
He was the first to suggest that all matter is made of
the elements earth, fire, air, and water
All of the above
Total
Question 3
Light is:
Your Answer
Electromagnetic radiation
The same form of energy that is used by radios and microwaves,
but in a different range of wavelengths
Visible to us because our photopigment molecules absorb it
All of the above
Total
Question 4
Light detection involves:
Your Answer
Correct
Special neurons called photoreceptors
Molecules called photopigments
The absorption of photons which causes changes in the shape of
photopigment molecules
All of the above
Correct
Total
Question 5
How does light affect the arrangement of the light-sensitive-molecule?
Your Answer
Sc
By providing more energy to the molecule
By adding photons to the molecule
By causing more action potentials to occur
By breaking one of the double bonds within the molecule
Total
Question 6
Correct
1.0
1.0
The effects of light on rhodopsin lead to:
Your Answer
A chain reaction of biochemical events
The closure of molecules called ion channels, which regulate the flow
of ions across neural membranes
A negative change in the electrical potential in photoreceptors
Correct
All of the above
Total
Question 7
Ion channels:
Your Answer
Score
Create pores in the membranes of neurons
Regulate the flow of ions into or out of neurons
Control the electrical signals of neurons
All of the above
Correct
1.00
Total
1.00 / 1
Question 8
An individual photon ultimately affects:
Your Answer
One photopigment molecule leading to an impact on one ion channel
One photopigment molecule leading to an impact on many ion channels
Many photopigment molecules which team up to affect one ion channel
Any of the above can happen, depending on the type of photon
Total
Question 9
Image formation occurs when:
Your Answer
Light sensing cells are located at the back of an eye
The pupil regulates the path of light to the rear surface of the eye
Inorrect
The lens and other structures refract light to focus it on the rear surface of the eye
Correc
All of the above
Total
Question 10
Light sensing:
Your Answer
Score
Occurs in plants
Occurs in simple animals
Occurs in humans
All of the above
Total
Question 11
Image formation involves:
Your Answer
Correct
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Light traveling in straight lines
Creation of a one-to-one correspondence between locations in the visual scene
and locations on the retina impacted by light originating from those locations
Light passing through apertures or pinholes
All of the above
Correct
Total
Question 12
Which of the following statements concerning apertures or pinholes are correct?
Your Answer
Apertures or pinholes are responsible for the images formed in a camera obscura
The pupil is effectively an aperture or pinhole
The aperture in the front of the eye is large and would produce blurry vision if it were not for other factors
All of the above
Total
Question 13
Kepler realized that vision is not as blurry as it should be, if the ___________________ were the
only thing(s) responsible for image formation.
Your Answer
Pupil
Score
Correct
1.00
Lens
Camera obscura
All of the above
Total
1.00 / 1.00
Question 14
What did Kepler propose is the reason for our clarity of vision?
Your Answer
A process whereby the image is magnified when it is projected on the retina.
The elliptical shape of the orbits of the planets
Refraction: light bends when it transitions from air to more dense materials,
creating a focused image on the retina.
Refraction: more light flows into the aperture of the eye, fine-tuning the image
Correct
and reducing blur.
Total
Question 15
Which of the following anatomical features contribute(s) to refraction of light within the eye?
Your Answer
Score
Cornea
Lens
Aqueous Humor
Vitreous Humor
All of the above
Total
Correct
1.00
1.00 / 1.00
Question 16
How is an image projected onto the back of the retina?
Your Answer
Score
Right-side up and backwards
Upside-down and backwards
The same way that it is seen
Upside down only
Inorrect
Total
0.00
0.00 / 1.00
Question 17
What was the purpose of the Inversion Prism goggles experiments performed?
Your Answer
To witness how phototransduction changes if the conformational
change does not occur.
To observe the distortion in visual activity created by light refraction.
To see if the brain will adjust to normal function if the image projected
on the back of the retina is changed.
To change the aperture of the eye so that the amount of blur can be
controlled and studied.
Total
Correct