Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 33, Problem 2CT
A compound extracted from the leaves of the shrub Stevin-rebaudiana is a natural sugar substitute. The compound is 300 times sweeter than sugar, but has a slight bitter aftertaste. Given what you know about taste receptors, explain how a compound can be perceived as both sweet and bitter.
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Chapter 33 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 33 - The pain of heartburn is an example of a ___ . a....Ch. 33 - ___ is defined as a decrease in the response to an...Ch. 33 - Which is a somatic sensation? a. taste b. smell c....Ch. 33 - Chemoreceptors play a role in the sense of ___ ....Ch. 33 - In the ___, neurons are arranged like maps that...Ch. 33 - Mechanoreceptors in the ___ send signal, to the...Ch. 33 - The middle ear functions in__________. a....Ch. 33 - Prob. 8SQCh. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Occupational Hearing Loss Frequent exposure to...
Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - The organ of Corti contains receptors that signal...Ch. 33 - Night vision begins with stimulation of ___ . a....Ch. 33 - Visual accommodation involves adjustment to the...Ch. 33 - When you view a close object, your lens gets ___ ....Ch. 33 - Defective or missing ___ cause mJor blindness. a....Ch. 33 - ___ causes the pupil to widen. a. Low light b....Ch. 33 - Match each structure with its description. _____...Ch. 33 - Like other nocturnal carnivores, the ferret shown...Ch. 33 - A compound extracted from the leaves of the shrub...Ch. 33 - Most bats eat insects or fruit. Vampire bats,...Ch. 33 - Prob. 4CT
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- Compare the mechanisms of the receptor molecules for salty and sour taste; the taste-receptor molecules for sweetness, bitterness, and umami; and odor-receptor molecules (Indicate if a given sense uses a GPCR, an ion channel etc and how the downstream signal might be different). Drawing is good for this type of question.arrow_forwardA patient has had a stroke that damaged the trigeminal nerve but not the facial, glossopharyngeal, or vagus nerve. Would this individual still be able to taste the differenceWould this individual still be able to taste the difference between hot peppers and French fries? Explain your answer.arrow_forwardEven though they are located in the back of the retinal tissue, what is the importance of the rod and cone photoreceptor cells to our sense of sight?arrow_forward
- From a biological perspective, how do we experience taste? Discuss the composite of the five basic taste sensations. Include a relevant example. Please include references.arrow_forwardWe compared the speed of transduction of the taste of sour vs either sweet or bitter, depending on what you tasted. Match the taste modality to the most likely transduction mechanism: Ion channel or second messenger system based on what is known. Salty is left out because there is not enough known about it. Sour Bitter Sweet Umamiarrow_forwardWhat might be the possible mechanism for the effect of miraculin on the perception of taste? With detailarrow_forward
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