Select the options that properly describe the function and features of rods. O The absorbance of rhodopsin in the rods is much more sensitive than in the cone opsins. The absorbance of rhodopsin in the cones is much more sensitive than in the rods opsins. O sensitive to bright light conditions. Rods are sensitive to vision in bright light conditions. In low light conditions rods perceive color as blue scale. OIn low light conditions rods perceive color as gray cale. O sensitive to low light conditions. O Rods are sensitive to low light conditions. OA bright blue light would stimulate rods more than cones. O Rods are sensitive to vision in low light conditions. O Low light conditions are viewed in blue scale. Rods are sensitive to bright light conditions.

Select the options that properly describe the function and features of rods. O The absorbance of rhodopsin in the rods is much more sensitive than in the cone opsins. The absorbance of rhodopsin in the cones is much more sensitive than in the rods opsins. O sensitive to bright light conditions. Rods are sensitive to vision in bright light conditions. In low light conditions rods perceive color as blue scale. OIn low light conditions rods perceive color as gray cale. O sensitive to low light conditions. O Rods are sensitive to low light conditions. OA bright blue light would stimulate rods more than cones. O Rods are sensitive to vision in low light conditions. O Low light conditions are viewed in blue scale. Rods are sensitive to bright light conditions.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter30: Sensory Perception

Section: Chapter Questions

Problem 15SA

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Rods differ from cones in the following ways: a. They detect dim light, not bright light. b. They have a different visual pigment. c. They are not located in the retina. d. All of the above. e. a and b only
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.
Occupational Hearing Loss Frequent exposure to loud noise of a particular pitch can cause loss of hair cells in the part of the cochlea that responds to that pitch. People who work with or around noisy machinery are at risk for such frequency-specific hearing loss. Taking precautions such as using ear plugs to reduce sound exposure is important. Noise-induced hearing loss can be prevented, but once it occurs it is irreversible because dead or damaged hair cells are not replaced. FIGURE 33.24 shows the threshold decibel levels at which sounds of different frequencies can be detected by an average 25-year-old carpenter, a 50-year-old carpenter, and a 50-year-old who has not been exposed to on-the-job noise. Sound frequencies are given in hertz (cycles per second), The more cycles per second, the higher the pitch. FIGURE 33.24 Effects of age aria occupational noise exposure. The graph shows the threshold hearing capacities fin decibels) for sounds of different frequencies (given in hertz) in a 25-year-okj carpenter (blue). a 50-year-old carpenter (red), arid a 50-year-ofd who did not have any on-the-job noise exposure (brown). 1. Which sound frequency was most easily detected by all three people?
Match each of the following terms with the appropriate description. _____ somatic senses (general senses)a.produced by strong stimulation _____ special sensesb.endings of sensory neurons or specialized cells next to them _____ variations in stimulus intensity _____ action potentialc.taste, smell, hearing, balance, and vision _____ sensory receptord.frequency and number of action potentials e.touch, pressure, temperature, pain, and muscle sense
Select the options that properly describe the function and features of rods. A bright blue light would stimulate rods more than cones. In low light conditions rods perceive color as gray cale. sensitive to bright light conditions. Rods are sensitive to vision in low light conditions. In low light conditions rods perceive color as blue scale. Low light conditions are viewed in blue scale. O The absorbance of rhodopsin in the rods is much more sensitive than in the cone opsins. Rods are sensitive to vision in bright light conditions. sensitive to low light conditions. Rods are sensitive to low light conditions. V The absorbance of rhodopsin in the cones is much more sensitive than in the rods opsins. Rods are sensitive to bright light conditions.
Select the options that properly describe the function and features of cone cones can see red, glue and green. A A bright blue light would stimulate rods more than cones. O In low light conditions cones perceive color as gray cale. O In low light conditions cones perceive color as blue scale. O cones view low light conditions in grayscale. O cones are sensitive to bright light conditions.
Put the following steps in order for transduction for vision. Question options: PDE breaks down cyclic GMP Photon is absorbed by discs the photoreceptor hyperpolarizes Sodium channels are inactivated and the dark current stops Opsin is activated Phosphodiesterase (PDE) is activated Transducin is activated
Select the options that properly describe the function and features of cones. A bright blue light would stimulate cones more than rods. cones can see red, blue and green. cones view low light conditions in grayscale. In low light conditions cones perceive color as blue scale. In low light conditions cones perceive color as gray cale. cones are sensitive to bright light conditions.
How are Ca2+ channels involved in phototransduction? they cause neurotransmitter release even if no action potentials are produced are not affected by PDE activation in the outer segments when open, they lead to hyperpolarization in photoreceptors in darkness, they do not rely on CGMP levels The density of cones in the retina: is highest where cone outer segments increase in diameter is lowest where retinal blood vessels are absent is drastically less than that of rods in the fovea is indicative of what areas are associated with acuity The recycling of rhodopsin.
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 cis
The discharge rate of an off-center ganglion cell: is not an absolute measure of light intensity does not depend on the background level of illumination O is highest when receptive field is in complete darkness O is the same for center-only and center-plus-surround illumination Which of the following terms are most suitably matched? Pitch, waveform Loudness, amplitude Frequency, pressure Tonotopy, phase
Which of the following is the best explanation of why it is difficult to discriminate the color of an object at night? Rods contain a single visual pigment. As many as 100 cones may converge on one ganglion cell. Cones come in three types, each sensitive to different wavelengths of light. The fovea are densely packed with cones.