BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 24, Problem 6MCQ
In what way are the senses of smell and taste different?
| a. | Chemoreceptors detect smell, whereas mechanoreceptors detect taste. |
| b. | Olfactory receptors bind to chemicals dissolved in gas, whereas taste receptors bind to chemicals dissolved in water. |
| c. | Olfactory receptors generate action potentials, whereas taste receptors generate only receptor potentials. |
| d. | Smell can detect chemicals from distant objects, whereas taste is limited to chemicals at close range. |
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If a person is born blind, in what way do the senses of hearing and touch improve? a. The person gradually develops more receptors in the ears and skin. b. The number of receptors does not change, but each of them becomes more responsive to weak stimuli. c. The receptors in the ears and skin send faster action potentials to the brain. d. Through practice the person learns to increase attention to hearing and touch, and those sensations come to activate the occipital cortex.
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.
What is meant by blindsight? a. Some people with damage to the primary visual cortex accurately guess the location or other properties of objects they say they don’t see. b. Blind people learn to find their way around by making sounds and listening for echoes. c. Blind people on average develop enhancements of hearing, touch, and other senses. d. After damage to the eyes, other body parts become sensitive to light. e. Incorrect hindsight.
Chapter 24 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 24.1 - Prob. 1MCCh. 24.1 - Prob. 2MCCh. 24.1 - Distinguish between the central and peripheral...Ch. 24.2 - Describe the parts of a typical neuron.Ch. 24.2 - Prob. 2MCCh. 24.2 - Prob. 3MCCh. 24.3 - Prob. 1MCCh. 24.3 - How does an axon generate and transmit a neural...Ch. 24.3 - Prob. 3MCCh. 24.4 - Describe the structure of a synapse.
Ch. 24.4 - Prob. 2MCCh. 24.4 - Prob. 3MCCh. 24.5 - Prob. 1MCCh. 24.5 - How do the sensory and motor pathways of the...Ch. 24.5 - Prob. 3MCCh. 24.5 - Prob. 4MCCh. 24.6 - Prob. 1MCCh. 24.6 - What are the major structures in the hindbrain,...Ch. 24.6 - Prob. 3MCCh. 24.6 - Prob. 4MCCh. 24.6 - Prob. 5MCCh. 24.7 - Prob. 1MCCh. 24.7 - Prob. 2MCCh. 24.7 - What are the major types of sensory receptors?Ch. 24.7 - Prob. 4MCCh. 24.7 - What is sensory adaptation, and how is it...Ch. 24.8 - Prob. 1MCCh. 24.8 - Prob. 2MCCh. 24.9 - Prob. 1MCCh. 24.9 - Prob. 2MCCh. 24.9 - Prob. 3MCCh. 24.10 - Prob. 1MCCh. 24.10 - Prob. 2MCCh. 24.10 - Prob. 3MCCh. 24.11 - What is the role of mechanoreceptors in the sense...Ch. 24.11 - Prob. 2MCCh. 24 - Prob. 1MCQCh. 24 - Prob. 2MCQCh. 24 - Prob. 3MCQCh. 24 - Prob. 4MCQCh. 24 - Prob. 5MCQCh. 24 - In what way are the senses of smell and taste...Ch. 24 - Prob. 1WIOCh. 24 - Prob. 2WIOCh. 24 - Prob. 3WIOCh. 24 - Prob. 4WIOCh. 24 - How does myelin alter the conduction of a neural...Ch. 24 - Prob. 6WIOCh. 24 - Prob. 7WIOCh. 24 - Prob. 8WIOCh. 24 - Prob. 9WIOCh. 24 - Prob. 10WIOCh. 24 - Prob. 1SLCh. 24 - Prob. 1PITCh. 24 - Prob. 2PITCh. 24 - Prob. 3PIT
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- What is the “retina” of the olfactory system? a. The olfactory epithelium b. The olfactory bulb c. The nose d. Hair cellsarrow_forwardJude is suffering from a severe cold. His nose has been stopped up for several days. What effect, if any, might his cold have on his sense of taste? a. His sense of taste will be increased since he isn’t receiving additional sensory input from his smell. b. His sense of taste will be dulled since taste and smell often work together. c. His sense of taste will get better but not until 48 hours after he loses his sense of smell. d. His sense of taste will be no better or worse since the senses of taste and smell are completely separate.arrow_forwardWhat function do the malleus, incus, and stapes bones in the inner ear play in processing sounds? A. The bones transform pressure waves into nerve impulses that the brain recognizes as sound. B. The bones equalize pressure between the middle ear and the atmosphere. C. The bones transmit vibrations to the oval window setting the fluid in the cochlea in motion. D. The bones depolarize or hyperpolarize hair cells depending on the direction they vibrate.arrow_forward
- As we progress from bipolar cells to ganglion cells to later cells in the visual system, what happens to the size of receptive fields? a. They become larger. b. They become smaller. c. They stay the same size. d. They vary in size unpredictably.arrow_forwardTrace the pathway from peripheral sensory receptor to the specific brain region where the sensation becomes conscious, describing every neuron along the way and naming any nerves the neurons travel in. a. taste bud b. olfactory epithelium c. retinaarrow_forwardWhat early experience is necessary to maintain binocular input to the neurons of the visual cortex? a. Cortical cells will always maintain binocular responsiveness, regardless of their experience. b. Cortical cells must receive some input to each eye every day. c. Cortical cells must receive an equal amount of input from the two eyes. d. Cortical cells must usually receive simultaneous input from the two eyes.arrow_forward
- Which of the following best describes hearing receptor “hair cells”? a. They are neurons. b. They lack ion channels. c. They are epithelial, but function like neurons. d. They are built of the protein keratin.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_forwardWhich statement regarding rods and cones is most accurate? a.) Rods and cones carry signals to the brain so an image can be formed. b.) Rods and cones refract light to focus it on the retina. c.) Rods and cones are photoreceptors, which detect light. d.) Rods and cones monitor the amount of light entering the eye and adjust the size of the pupil.arrow_forward
- Which of the following statements explains why vision is less sharp in dim light than in bright light?a. Cones are more responsive in dim light.b. There are more rods than cones in the eye.c. Many rods converge on a single ganglion.d. The dilated pupil lets in more light than the lens can focus.arrow_forwardThe receptors for sweet, bitter, and umami tastes all resemble which of these? A. Metabotropic synaptic receptors B. The rods in the retina C. The hair cells of the auditory system D. Endocrine glandsarrow_forwardWhy is it possible for us to taste a wide variety of chemicals as bitter? a. All bitter substances are chemically similar. b. We have 25 or more types of bitter receptors. c. We have a bitter receptor that is versatile enough to detect many types of chemicals. d. Sweet and sour receptors can detect bitter substances.arrow_forward
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