Test Your knowledge
1. Approximately how many taste buds does the average human have?
2. What are the five different tastes?
3. What are the names of the three cranial nerves that carry chemical signals to the brainstem from the mouth?
4. Which of the four molecules would not be considered sweet tasting?
5. Which of the tastes is stimulated from the passing of an ion through an ion channel as opposed to a receptor complex?
6. What molecule acts as a neurotransmitter to activate the post synaptic vesicule of the cranial nerve from the taste cell?
7. If the reaction between a starch and water is a first order reaction, what happens to the rate of reaction when the concentration doubles?
8. How is an action potential created in the taste cell?
9. What is the order in which the secondary messengers are activated?
10. What defines a food as being sour?
- 100
- 10 000
- 1 000 000
- 10
2. What are the five different tastes?
- sweet, sour, bitter, fatty, salty
- soft, rough, hot, cold, sticky
- umami, salty, bitter, fatty, poisonous
- sweet, umami, sour, bitter, salty
3. What are the names of the three cranial nerves that carry chemical signals to the brainstem from the mouth?
- facial nerve, tympani chorda nerve, gloss- taste cell nerve
- vangus nerve, brainstem nerve, umami nerve
- chorda tympani nerve, vangus nerve, glosso-pharyngeal nerve
- gustatory nerve, somaseonsory nerve, olfactory nerve
4. Which of the four molecules would not be considered sweet tasting?
- monosodium glutamate
- cyclamate
- saccharin
- aspartame
5. Which of the tastes is stimulated from the passing of an ion through an ion channel as opposed to a receptor complex?
- sour
- sweet
- bitter
- umami
6. What molecule acts as a neurotransmitter to activate the post synaptic vesicule of the cranial nerve from the taste cell?
- ATP
- glutamate
- foliate
- amiloride
7. If the reaction between a starch and water is a first order reaction, what happens to the rate of reaction when the concentration doubles?
- the rate remains the same
- the rate decreases
- the rate quadruples
- the rate doubles
8. How is an action potential created in the taste cell?
- the cell becomes polarized as positive ions enter into the cell, creating a positive charge on the inside of the membrane an a negative charge on the outside
- the cell becomes depolarized as positive ions enter into the cell, creating a positive charge on the inside of the membrane an a negative charge on the outside
- the cell receives an electric shock the moment a molecule latches onto its receptor
- its magic
9. What is the order in which the secondary messengers are activated?
- phospholipase C, diacylglycerol, glutamate
- diacylglycerol, G-protein, phospholipase C
- G-protein, phospholipase C, diacylglycerol
- diacylglycerol, phospholipase C, G-protein
10. What defines a food as being sour?
- its yellow colour
- its hydroxide ion
- a methyl functional group
- its hydrogen ion