Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 50, Problem 2TYK
Summary Introduction
Introduction: Photoreceptors contain Light-absorbing pigments that are involved in detecting light. The insects, crustaceans, and many other animals contain compound eyes, which are loaded with many light detectors known as ommatidia.
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This image is of the very back of the eye. Light would be coming in from the left towards the right side.
WHich label indicates the photo receptor rod and cone cells?
A. middle layer, red and green
B. rods and cones are not in this image, they are much closer to the front of the eye ball
C. far right side, purple and yellow
D. far left side, gray
When you exit a dark room into a brightly lit environment, within seconds, you to see a crisp view of your surroundings. However, when you enter a dark room from a brightly lit environment, your eyes might take more than 10 minutes to become used to the new surroundings. Your eyes are waiting for:
a. the rods to begin to function
b. the cones to begin to function
c. the pupils to get smaller
Vision is a complex process. The human eye has many structures that contribute to vision. Which of the following statements describing the structures involved in the process of vision is NOT correct?
a. Ciliary muscles change the shape of the lens to focus both near and distant objects.
b. The cornea and lens bend light to focus the image on the retina.
c. The iris relaxes and contracts to protect the retina from excess light.
d. Lenses move forward or backward to control the amount of light striking the retina.
Chapter 50 Solutions
Study Guide for Campbell Biology
Ch. 50 - List and describe the four functions common to all...Ch. 50 - Prob. 2IQCh. 50 - Label the parts in the following diagram of the...Ch. 50 - Label the parts of the human eye in the following...Ch. 50 - The receptive field of a ganglion cell includes...Ch. 50 - Prob. 6IQCh. 50 - Identify the components in the following diagram...Ch. 50 - a. Identify the three distinct types of skeletal...Ch. 50 - List an advantage and a disadvantage of each of...Ch. 50 - a. Which mode of locomotion is the most energy...
Ch. 50 - Prob. 1SYKCh. 50 - Prob. 2SYKCh. 50 - Prob. 3SYKCh. 50 - Prob. 1TYKCh. 50 - Prob. 2TYKCh. 50 - Prob. 3TYKCh. 50 - Prob. 4TYKCh. 50 - Prob. 5TYKCh. 50 - Prob. 6TYKCh. 50 - Prob. 7TYKCh. 50 - Prob. 8TYKCh. 50 - The eyes of individuals with achromatopsia contain...Ch. 50 - Which of the following structures is incorrectly...Ch. 50 - Prob. 11TYKCh. 50 - The absorption of light by rhodopsin in a rod cell...Ch. 50 - Prob. 13TYKCh. 50 - Prob. 14TYKCh. 50 - Prob. 15TYKCh. 50 - Prob. 16TYKCh. 50 - The role of ATP in muscle contraction is to a....Ch. 50 - How does calcium affect muscle contraction? a. It...Ch. 50 - Prob. 19TYKCh. 50 - Prob. 20TYKCh. 50 - Prob. 21TYKCh. 50 - Prob. 22TYKCh. 50 - Prob. 23TYKCh. 50 - Which of the following combinations of animal size...
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- What is the function of the highlighted element in this image? Creates an action potential Processes color Creates 3D perception D Refracts light A. B.arrow_forwardYou are scanning a crowd to look for your friend's face. As your gaze stops on each face, you are making a ______. As your gaze moves between faces, you are making a _________. a. accade; fixation b. fixation; saccade c. focus point; saccade d. fixation; smooth pursuitarrow_forwardPlease ASAP Thank you. 1. What is the basis for human color vision? a. Different spectral sensitivity of the three different kinds of retinal cones b. Different spectral sensitivity of rods c. Spectral filters in the eye that separate light into its spectral components before it reaches the retina d. Processing that occurs in the neural circuits in the retina 2. Imagine yourself locked in a room without any light source for 30 minutes. Then let’s imagine that someone shines a red light in the corner of the room. One should expect that the rod cells in your retina will: a. Be more sensitive to the red light after the 30 minutes of darkness as compared to earlier b. Be less sensitive to the red light after the 30 minutes of darkness as compared to earlier c. Be equally sensitive to the red light as before the 30 minutes of darkness e. Rod cells do not respond to red lightarrow_forward
- The 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_forwardWhich one of the following statements about photoreception is true? a. Light detection is initiated by the absorbance of light (a photon) by a photopigment molecule. b. Light detection is synonomous with vision. c. Light detection is always initiated in a rod photoreceptor located in the retina. d. Only light in the visible range (between 400 and 700 nm wavelength) can be detected by animals. e. None of the above answer choices (neither A, nor B, nor C, nor D) is true.arrow_forwardAt night, which type(s) of photopigment enable(s) you to discriminate the colors of neon signs and traffic lights? A. Rhodopsin B. Cone visual pigments C. Melanopsin D. Two of the abovearrow_forward
- Cone 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_forwardWhen you are stalking your friend's social media via a smartphone.a. In your opinion, which receptor organs and cells function to process light stimuli so that they can be transmitted to neurons to become an electrical signal. Explain your answer!b. Describe in detail how the light transduction process pathway to the eye, so that it can see an information from your smartphone!arrow_forwardWhich of the following descriptions of photoreceptors in the eye is NOT correct? a. Cones are concentrated in the fovea of the retina and function to detect colours. b. Rods are concentrated at the periphery and function well in dim light. c. Rods are concentrated in the fovea of the retina and function well in dim light. d. Rods are sensitive to light and register black and white. Cones detect colours.arrow_forward
- The dissociation of rhodopsin in the rods in response to light causes a.the Na+ channels to become blocked. b.the rods to secrete less neurotransmitter. c.the bipolar cells to become either stimulated or inhibited. d.all of these.arrow_forwardRegarding the sensation of various species, which of the following statements is false? A. The eyes of honeybees transduce parts of the electromagnetic spectrum that are invisible to humans B. Bats ears transduce sound waves that humans cannot hear C. Research has shown that the human eye transducers all of the electromagnetic spectrum to the brain, but the brain is unable to perceive it. D. Sharks have special organs that can sense the bioelectric fields of other living thingsarrow_forwardColour blindness can result from the loss of specific types of cones, or it can occur in individuals having fewer cones of a given type. An individual has 50% less than the normal number of green cone photoreceptors in his or her retina. How would this affect his or her vision? a. This person has night blindness. He or she should start to eat more carrots to replenish the stock of retinal molecules in the retina. b. This person will have difficulty adapting to varying light levels. His or her cone receptors take much longer to adapt in a brightly lit area. c. This person does not have a colour blindness because no green cone photoreceptors are in the retina; only red, yellow, and blue photoreceptors exist. d. This person has a mild green colour blindness. He or she cannot see green colours very clearly and has difficulty distinguishing colours involving green hues.arrow_forward
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