BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 43, Problem 7U
________ is the photopigment contained within both rods and cones of the eye.
a. Carotene
b. Cis-retinal
c. Photochrome
d. Chlorophyll
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Who proposed the “trichromatic theory” of color vision, suggesting that color perception is based on the activity of three types of cones sensitive to different wavelengths of light?a) Hermann von Helmholtz b) Gustav Fechner c) Ernst Weber d) David Hubel.
Which of the following statements about photoreceptors is true?
A) There are more rod cells in the fovea of the eye, although overall there are more cones in the human eye.
B) All of these options
C) Photoreceptors are located near the front of the eye, in the cornea.
D) There are two types of photoreceptors, rods and cones, that contain different photopigments.
The human eye forms the image of an object at its:(a) Cornea(b) Iris(c) Pupil (d) Retina
Chapter 43 Solutions
BIOLOGY
Ch. 43.1 - Prob. 1LOCh. 43.1 - Prob. 2LOCh. 43.1 - Describe how gated ion channels work.Ch. 43.2 - Prob. 1LOCh. 43.2 - Describe the function of these receptors.Ch. 43.2 - Describe the relationship between thermoreceptors...Ch. 43.3 - Prob. 1LOCh. 43.3 - Prob. 2LOCh. 43.4 - Prob. 1LOCh. 43.4 - Prob. 2LO
Ch. 43.4 - Prob. 3LOCh. 43.5 - Prob. 1LOCh. 43.5 - Prob. 2LOCh. 43.6 - Prob. 1LOCh. 43.6 - Prob. 2LOCh. 43.6 - Prob. 3LOCh. 43.7 - Prob. 1LOCh. 43 - Prob. 1DACh. 43 - Prob. 1IQCh. 43 - Prob. 2IQCh. 43 - Prob. 3IQCh. 43 - Which of these is NOT a method by which sensory...Ch. 43 - Which of the following correctly lists the steps...Ch. 43 - All sensory receptors are able to initiate nerve...Ch. 43 - In the fairy tale, Sleeping Beauty fell asleep...Ch. 43 - The ear detects sound by the movement of a. the...Ch. 43 - Hair cells in the vestibular apparatus of...Ch. 43 - ________ is the photopigment contained within both...Ch. 43 - Which of the following is NOT a method used by...Ch. 43 - Prob. 9UCh. 43 - Prob. 10UCh. 43 - What do the sensory systems of annelids, mollusks,...Ch. 43 - Animals can more easily tell the direction of a...Ch. 43 - Some birds have broader color perception than...Ch. 43 - The ability of some insects, birds, and lizards to...Ch. 43 - Prob. 1SCh. 43 - The function of the vertebrate eye is unusual...Ch. 43 - How would the otolith organs of an astronaut...Ch. 43 - Prob. 4S
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- The order in which the cells in the eye process light is __________. A) photoreceptors; ganglion cells; bipolar cells B) ganglion cells; bipolar cells; photoreceptors C) photoreceptors; bipolar cells; ganglion cells D) bipolar cells; photoreceptors; ganglion cellsarrow_forwardWhen you view a close object, your lens gets_____ . a. flatter c. darker b. rounder d. cloudierarrow_forwardName the part of the eye that(a) determines the colour of a person’s eye(b) Controls the amount of light entering the eyearrow_forward
- In humans, most olfactory cells are located in thea. nasal cavity.b. nostrils.c. pharynx.d. roof of the mouth.arrow_forwardWhich of these photoreceptor cells do not match their function? a) rods - night vision b) stavar - sharp-sighted c) drops - color vision d) No answer text provided.arrow_forwardWhy is a retinal defect, such as retinitis pigmentosa, which causes tunnel vision, associated with night blindness? a. Tunnel vision and night blindness are unrelated conditions. b. The high density of rod photoreceptors in the fovea are unaffected in each condition. c. The highest resolution cone photoreceptors are found exclusively in the outer regions of the retina. d. The color-detecting cone photoreceptors have the greatest density in the outer regions of the retina. e. The highly-sensitive rod photoreceptors are located in the outer regions of the retina.arrow_forward
- Why is it easier to see images at night using peripheral, rather than the central, vision? a. Cones are denser in the periphery of the retina. b. Bipolar cells are denser in the periphery of the retina. c. Rods are denser in the periphery of the retina. d. The optic nerve exits at the periphery of the retina.arrow_forwardWe have three types of cones in the retina. Explain how we can see a large range of colors with only three types of cones:arrow_forwardAn object absorbs Red, Orange, Yellow, and Purple light waves and reflects the remaining. What color do we perceive this object to be? Select one: a. Brown b. Blue-Green c. Pink d. Yellow-Greenarrow_forward
- A patient instilled a few drops of eye medication into his eyes containing Ephedrine by mistake. Which one of the following effect is most likely to occur? a. Miosis b. Mydriasis c. Loss of corneal reflex d. Loss of light reflexarrow_forwardThe transduction process of converting light into neural signals sent to the central nervous system involves which of these steps? A. Bipolar Cells collect signals from Rods and Cones. B. The Optic Nerve carries signals about light from the Lateral Geniculate Nuclues to the Retinal Ganglion Cells. C. Retinal Ganglion Cells relay information to Rods and Cones. D. Light that reaches the eyes passes first through the Retina which focuses that light onto the Cornea.arrow_forwardCone pigments detect different wavelengths of light due toa. their location in the retina.b. the amount of light they absorb.c. the type of retinal they have.d. the type of opsin protein they have.e. interactions with bipolar cells.arrow_forward
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