Agriculture
Keeping Bugs Away from Food
Where Have All the Bees Gone?
Getting the dirt on carbon
Amphibians
Tree Frogs
Salamanders
Bullfrogs
Animals
Return of the Lost Limbs
Mating Slows Down Prairie Dogs
Poor Devils
Behavior
A Recipe for Happiness
Swedish Rhapsody
Pondering the puzzling platypus
Birds
Geese
Flightless Birds
Waterfowl
Chemistry and Materials
The science of disappearing
The Incredible Shrunken Kids
Silk’s superpowers
Computers
Play for Science
Seen on the Science Fair Scene
It's a Small E-mail World After All
Dinosaurs and Fossils
Have shell, will travel
Digging for Ancient DNA
Hunting by Sucking, Long Ago
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Rocking the House
Island of Hope
Meteorites may have sparked life on Earth
Environment
Cactus Goo for Clean Water
Swimming with Sharks and Stingrays
Where rivers run uphill
Finding the Past
The Taming of the Cat
A Big Discovery about Little People
Watching deep-space fireworks
Fish
Electric Catfish
Trout
Mako Sharks
Food and Nutrition
Chocolate Rules
Healing Honey
The Color of Health
GSAT English Rules
Pronouns
Adjectives and Adverbs
Whoever vs. Whomever
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
2014 GSAT Results for Jamaican Kids
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
GSAT Mathematics
Deep-space dancers
Math and our number sense: PassGSAT.com
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Hear, Hear
Fighting Off Micro-Invader Epidemics
Don't Eat That Sandwich!
Invertebrates
Caterpillars
Scallops
Crustaceans
Mammals
Koalas
Humans
Bobcats
Parents
How children learn
Children and Media
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
The Particle Zoo
Dreams of Floating in Space
Black Hole Journey
Plants
Fungus Hunt
When Fungi and Algae Marry
Nature's Alphabet
Reptiles
Caimans
Anacondas
Gila Monsters
Space and Astronomy
Evidence of a Wet Mars
An Icy Blob of Fluff
Unveiling Titan
Technology and Engineering
A Clean Getaway
Slip Sliming Away
A Light Delay
The Parts of Speech
What is a Noun
Adjectives and Adverbs
What is a Verb?
Transportation
Morphing a Wing to Save Fuel
Flying the Hyper Skies
Where rivers run uphill
Weather
Either Martians or Mars has gas
The solar system's biggest junkyard
Recipe for a Hurricane
Add your Article

Taste Messenger

It can be hard to imagine life without a sense of taste. Ice cream would feel cold and smooth without the sweetness. Peanut butter would seem sticky and thick without the nuttiness. Apples would be crispy and juicy without the tartness. Scientists have long known that different foods stimulate taste buds in our mouths in different ways. Taste buds then send messages along nerves to the brain about the food's flavor. What's been missing for scientists, however, is an understanding of how these messages about taste get from taste buds in the tongue to the body's nervous system. Now, researchers from Colorado State University in Fort Collins and elsewhere say that they have found the flavor messenger. A molecule called adenosine 5'-triphosphate (ATP) seems to be the missing link. ATP normally works to store and transport energy within cells. Scientists had noticed that ATP occasionally also works as a neurotransmitter, a molecule that sends messages from one nerve cell to another. In some cases, for example, it takes information about the amount of oxygen in your blood and tells your nerves what it has found. To see whether ATP could also carry information about flavor, the scientists first studied taste buds that had been taken out of normal mice. When stimulated with flavored liquids, the buds released ATP. Next, the team worked with mutated mice that were unable to transport ATP into cells. The nerves in these mice reacted to touch, but did not respond to flavor chemicals. Finally, the researchers put mice in cages with two water bottles. One bottle held water. The other held different types of flavored liquids. The results showed that normal mice liked some of the flavored drinks better than water. Some, they liked less. The mutated mice, on the other hand, couldn't tell the difference between water and the flavored liquids. They drank any one liquid as often as the others. The findings suggest that ATP is the reason that you can tell the difference between chocolate pudding and mud. Life without it as a taste messenger would be a lot less interesting.—E. Sohn

Taste Messenger
Taste Messenger








Designed and Powered by HBJamaica.com™