TEST 4-Detecting Chemicals

Question 1

Taste

Answer 1

direct chemical sense-contact

each receptor is designed to detect a certain kind of chemical

Question 2

Kinds of Chemicals

Answer 2

sweet (fructose-corn syrup)
sour (acetic acid-vinegar)
bitter (quineine sulfate-tonic water)
salty (sodium chloride-table salt)
umami (savory-MSG)

Question 3

Papilla

Answer 3

one little bump on tongue

all receptors can be found on one bump

Question 4

Flavor (taste) of food

Answer 4

taste receptors

smell (sick-stuffed up nose): food tastes bland

Question 5

Smell

Answer 5

indirect chemical sense

30 unique receptors

Question 6

Categories of smell

Answer 6

camphor- Vick's vapor rub
musk- sweet and earthy
floral
peppermint and other mints
ethereal-airy, baby powder
pungent-sharp, sour, vinegar, sour milk, pine
putrid-rotting stuff, sulfur often in

Question 7

Mercaptan

Answer 7

we are very sensitive

added to natural gas so we can detect it

Question 8

Primitive Sense

Answer 8

most organisms can do this