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 14TYK
Summary Introduction
Introduction: The sense of gestation is used to identify different type of tastants. There is a total of five tastants that produce taste perceptions. The sense of taste relies on the taste cells that are defined by the presence of sensory receptors on the tongue.
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The 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 glands
Which of the following is the most accurate description of why bitter and sweet tastants are perceived differently?
a. The receptors for these classes of compounds are expressed in different cells.
b. The receptors activate distinct second messenger systems.
c. Bitter receptors are coupled to a different G-protein than sweet receptors.
d. These tastants activate different parts of the tongue. e.
Bitter is an inhibitory response, sweetness is activation.
Which of these statements is not true with respect to olfaction?a. Olfactory sensation is relayed directly to the cerebral cortex withoutpassing through the thalamus.b. Olfactory neurons are replaced about every 2 months.c. The olfactory cortex is involved in the conscious perception of smell.d. The secondary olfactory areas are responsible for visceral andemotional reactions to odors.e. The olfactory cortex is in the occipital lobe of the cerebrum.
Chapter 50 Solutions
Study Guide for Campbell Biology
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- Which of these is not one of the basic tastes?a. spicy b. salt c. bitter d. umami e. sourarrow_forwardSalivary glands are important in taste because _________________ . a. they provide the fluid in which food molecules dissolve b. the taste receptors are located in salivary glands c. salivary glands are part of the brain d. they produce enzymes to break down the foodarrow_forwardOlfactory sensory neurons have olfactory ______ that extend outward from the epithelium for conveying impulses in sensation of smell. A. papillae B. supporting cells C. olfactory epithelium D. cilia What chemicals would elicit the bitter taste sensation? A. alkaloids B. metal ions C. hydorgen ions D. glutamate Sound waves that enter the external auditory meatus will encounter the ______, which vibrates at exactly the same frequency as the sound waves hitting it? A. ceruminous glands B. tympanic membrane C. auricle D. scala tympaniarrow_forward
- Taste buds on the surface of the tongue can detect a taste only when chemicals are dissolved in saliva so that chemoreceptors can start an impulse to the brain. Which of the following statements is correct about the taste sensory pathway? a. The temporal lobe of the cerebrum perceives the taste sensation. b. Nerve impulses trigger taste buds and send information to the brain. c. Taste buds sense taste, and the parietal lobe perceives taste. d. The tip of the tongue senses sweet, and the periphery senses sour and salty flavours.arrow_forwardTina has had the flu for the past 4 days. It has been the most horrible feeling of her life. Initially she couldn't smell. Now, it appears that she cannot taste anything. Using the knowledge you have gathered a. Explain why Tina cannot smell and taste at the same time. b. Explain in detail the relationship between our sense of taste and smell c. What treatment would you recommend for Tinaarrow_forwardIn humans, most olfactory cells are located in thea. nasal cavity.b. nostrils.c. pharynx.d. roof of the mouth.arrow_forward
- Which statements is/are true? a. The test substances can only be determined in their specific area according to the taste map of thetongue.b. The test substances can be determined anywhere in the tongue.c. The middle of the tongue cannot taste any of the substances.d. The salt solution is the only substances that could be determined in the middle of the tongue.e. Intensity of the taste of the substances are different form every area of the tongue.arrow_forwardHyperosmia is a condition where individuals have a heightened sense of smell. People with hyperosmia are able to detect weaker odours than the general population. Compared to the general population, people with hyperosmia have Select one: a. more receptors for olfaction b. more neural connections between the nasal cavity and brain c. a lower threshold level for odours d. a faster action potential transmitted along the axonarrow_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_forward
- Trace 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 statements are true about taste buds?a. Taste buds consist of basilar, supporting, and gustatory cells. b. The gustatory cells have gustatory hairs that extend into taste pores. c. Receptors on the hairs detect dissolved substances. d. Five basic types of taste exist: sour, salty, bitter, sweet, and umami.arrow_forwardMatch the taste with the chemical substance that produces it. _____ Sweet a. Nitrogen-containing compounds _____ Sour b. Sucrose _____ Salty c. Glutamate _____ Bitter d. Sodium ions _____ Umami e. Hydrogen ionsarrow_forward
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