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The Relationship Between Taste and Smell

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Lani Nuñez

on 4 April 2013

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Transcript of The Relationship Between Taste and Smell

Ilaniel Nuñez Hypothesis Graph of Data Collected Analysis The sense of smell and the sense of taste are important because they work together to create the sensation of flavor. If you hold your nose and start chewing a jelly bean taste is limited, but open your nose midway through chewing and then you suddenly recognize apple or watermelon." This is also a reason that things taste different when you have a cold. When you put a food in your mouth, odor molecules from that food travel through the passage between your nose and mouth to the olfactory receptor cells (nerve ending that senses or receives stimuli relating to or contributing to the sense of smell) at the top of your nasal cavity, just beneath the brain and behind the bridge of the nose. If mucus in your nasal passages (pathways between the nose and mouth which carry odor molecules to olfactory cells) becomes too thick, air and odor molecules can’t reach your olfactory receptor cells. My hypothesis is if a person cannot smell what they are eating, then they will not be able to get the full effect of the flavor. I came up with this hypothesis because of the observation that I made about having a stuffy nose and not being able to taste things correctly. In my analysis I noticed that with each trial, the flavor distinction was greater without their nose plugged than with it. That answered my question and confirmed my conclusion to be correct. Research The Relationship Between Taste and Smell Introduction My Science Fair Project is on the relationship between taste and smell. I chose this project because I have always wondered why things always taste wierd when you have a stuffy nose. This project helped me to understand the relationship between taste and smell. Conclusion So, in conclusion, my hypothesis is if a person cannot smell what they are eating, then they will not be able to get the full effect of the flavor. I based this off of the fact that people seem unable to taste the correct flavor when their nose is plugged. The results indicate that this hypothesis should be considered valid because in my tests, the results came out to prove the hypothesis correct, and other similar experiments came out with similar results. Because of the results of this experiment, I know why people do not taste well when their nose is plugged. If I were to conduct this experiment again, I would test if age or gender made a difference between the taste distinction. Thus, your brain receives no signal identifying the odor, and everything you eat tastes much the same. You can feel the texture and temperature of the food, but no messengers can tell your brain, “This cool, milky substance is chocolate ice cream.” The odor molecules remain trapped in your mouth. The pathway has been blocked off to those powerful perceivers of smell--the olfactory bulbs. We breathe in airborne molecules- the smallest particle into which a substance can be divided without chemical change that travel to and combine with receptors in nasal cells. The cilia, hairlike receptors that extend from cells inside the nose, are covered with thin, clear mucus that dissolves odor molecules not already in vapor form. When the mucus becomes too thick, it can no longer dissolve the molecules. Research cont. Bibliography Past Project
C., Molly. "Science Project 2004." Can Student's Identify Fruit Juices Better With Taste, Smell, or Both?. Selah.com, n.d. Web. 24 Nov 2012. <http://www.selah.k12.wa.us/SOAR/SciProj2004/MollyC.html>.
Finger, Tom. "The Surprising Impact of Taste and Smell." LiveScience. LiveScience, 05 2008. Web. 24 Nov 2012. <http://www.livescience.com/2737-surprising-impact-taste-smell.html>.
. "Taste and Smell." ReachoutMichigan.org. Newton's Apple, 25 2012. Web. 24 Nov 2012. <http://reachoutmichigan.org/funexperiments/agesubject/lessons/newton/tstesmll.html>. Past Project Can Student's Identify Fruit Juices Better With Taste, Smell, or Both? By: Molly C.
This test was very similar to mine because she tested whether students could identify fruit juices better with taste, smell or both, but she used fruit juices instead of candies.
I compared her results to mine and realized that she came up with just about the same results. This helped me to better prove my hypothesis. Procedure 1. Meet each volunteer separately from each other for each test.
2. One at a time, blindfold each volunteer and have them plug their nose.
3. Randomly choose a flavor and give it to the volunteer.
4. Ask the volunteer for their intensity rating.
5. Halfway through the candy, have the volunteer unplug their nose.
6. Repeat step 4.
7. Record all of the results. Average rating of flavor intensity Trial Number Question My question is what will happen if a
person cannot smell what they are eating? Materials Assortment of Life Savers hard candies (5 flavors, 15-25 altogether)
3-5 Human Volunteers
Nose plug Data Table Data will be measured by the description of the volunteer as intense, not intense, not as intense, etc.
For Average: Vague=1, Strong=2, Intense=3, Very Intense=4 Variables Independent Variable— whether the volunteer can or cannot smell.
Dependent Variable— The intensity of flavor that the volunteer gets.
Control- When the volunteers had their nose plugged.
Constant- Flavors.
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