What is Life? A Guide to Biology with Physiology
3rd Edition
ISBN: 9781464157745
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 23, Problem 11SA
Summary Introduction
To analyze:
Why some insects can see wavelengths of light in the ultraviolet spectrum that are invisible to humans.
Introduction:
The photoreceptors in the eyes are the structures responsible for the ability to see different wavelengths of light.
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Chapter 23 Solutions
What is Life? A Guide to Biology with Physiology
Ch. 23 - Prob. 1SACh. 23 - Prob. 2SACh. 23 - Prob. 3SACh. 23 - Prob. 4SACh. 23 - Prob. 5SACh. 23 - Prob. 6SACh. 23 - Prob. 7SACh. 23 - Prob. 8SACh. 23 - Prob. 9SACh. 23 - Prob. 10SA
Ch. 23 - Prob. 11SACh. 23 - Prob. 12SACh. 23 - Prob. 13SACh. 23 - Prob. 14SACh. 23 - Prob. 15SACh. 23 - Prob. 16SACh. 23 - Prob. 17SACh. 23 - Prob. 18SACh. 23 - Prob. 19SACh. 23 - Prob. 20SACh. 23 - Prob. 1MCCh. 23 - Prob. 2MCCh. 23 - Prob. 3MCCh. 23 - Prob. 4MCCh. 23 - Prob. 5MCCh. 23 - Prob. 6MCCh. 23 - Prob. 7MCCh. 23 - Prob. 8MCCh. 23 - Prob. 9MCCh. 23 - Prob. 10MCCh. 23 - Prob. 11MCCh. 23 - Prob. 12MCCh. 23 - Prob. 13MCCh. 23 - Prob. 14MCCh. 23 - Prob. 15MCCh. 23 - Prob. 16MC
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- Figure 36.18 Which of the following statements about the human eye is false? Rods detect color, while cones detect only shades of gray. When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye. The iris adjusts the amount of light coming into the eye. The cornea is a protective layer on the front of the eye.arrow_forwardIf an object appears red, which of the following light colors is transmitted or reflected (NOT absorbed)? Violet Red Green Blue Chartreusearrow_forwardMs. Brundage buys a fancy new plant, and brings it home to replace her plastic ones. The action spectrum of the plant's leaves is found in Figure 1 below. Unfortunately it is winter and there is very little natural light. The local hardware store offers her two lighting choices: halogen light or cool white LED. After a little research, she discovers the spectrum of each type of light, as shown in Figure 2. a) Which type of light should Ms. Brundage purchase? Explain. b)The salesperson assures her that her plant most likely will be able to grow under either type of light. Given what you know about plant pigments and photosynthesis, how could this be possible? Explain.arrow_forward
- Which the correct order of passing information of light stimuli among cells in the retina? ganglion cell → bipolar cells → photoreceptor photoreceptor → amacrine cells → ganglion cell horizontal cell photoreceptor →ganglion cell Ophotoreceptor → bipolar cells → ganglion cellarrow_forwardThe 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_forwardWhat is vision? Why is vision important for life on earth?arrow_forward
- key function of rod photoreceptors is to: detect colors detect fine details in the visual field. detect light under low levels of illumination. detect light under high levels of illumination. During phototransduction, transducin activates phosphodiesterase (PDE) that converts: GTP to GDP CGMP to GMP retinal cis to retinal trans retinal trans to retinal cisarrow_forwardPhotopic vision involves 1) Vision at night 2)Rods and cones working 3) poor illumination 4) all of the optionsarrow_forwardWhy are bright light harmful to cells?arrow_forward
- Trace the path of light from the time it enters the eye to the time it leaves the eye to travel to the brain. You should refer to your labeled eye diagram.arrow_forwardWhich of the following defines a rod cell of the human eye? Opening through which light enters the eye Ring of smooth muscle that adjusts how much light enters the eye A photoreceptor active in dim light that provides a coarse perception of an image and detects motion A photoreceptor that provides sharp vision and allows detection of colorarrow_forwardWhich of the following best describes the function of a camera type eye? A) To form high-definition images that are transmitted to the brain. B) To gather and concentrate light through a lens onto retinal tissue which generates an impulse that is transmitted to the brain. C) To protect the optic nerve which generates an impulse that is transmitted to the brain. D) To detect vibrations through the vitreous body which generates an impulse that is transmitted to the brain.arrow_forward
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