Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
Raywin:
--- Quote from: aangel42 on June 07, 2010, 02:00:33 pm ---Okay guys, I realize this isn't anywhere in our syllabus, I'm just curious...
Why is it that when we don't eat for a while (like you barely ate anything for 12 hours), our stomach starts hurting because of hunger?
How is that possible?
If anyone has any idea.....
--- End quote ---
Lol, interesting Q, hmmm i think its because,
Normally our stomach produces HCl constantly. And well, when you dont eat for like 12 hrs like u said, the hcl umm builds up and its uncomfortable, which is why it hurts us. ;D hahaha.. i just gave it a try.. :P
8T:
--- Quote from: ~VIN1094~ on June 07, 2010, 01:47:28 pm ---O2 and/or CO2
--- End quote ---
Ya that just slipped XD Thank You
8T:
--- Quote from: IGCSE AWESOME STUDENT on June 07, 2010, 01:18:31 pm ---hey, who thought the CHEM P3 was a bit tough?
--- End quote ---
I did !
8T:
--- Quote from: aangel42 on June 07, 2010, 01:49:23 pm ---ALL living organisms display those characteristics. Excretion isn't just..what you're thinking. lol :P
The syllabus defines excretion as: "the removal from organisms of toxic materials, the waste products of metabolism, and substances in excess of requirements (E.G. CARBON DIOXIDE)"
This is just one example, but plants respire, which means they use up oxygen and release CO2, same as humans do, and therefore they essentially excrete CO2.
I hope this helps?
--- End quote ---
HAHA yes thts what i was thinking :S
Ya it helped much Thanks u already have by now +rep :)
Vin:
--- Quote from: aangel42 on June 07, 2010, 02:00:33 pm ---Okay guys, I realize this isn't anywhere in our syllabus, I'm just curious...
Why is it that when we don't eat for a while (like you barely ate anything for 12 hours), our stomach starts hurting because of hunger?
How is that possible?
If anyone has any idea.....
--- End quote ---
Hurting or "growling"? You know the muscle stomach churns partially digested food or chyme. So this churning of mixture of solid and liquid food and gases produces sound, which is too low that's is why you cant hear the noise when your stomach is full. If your stomach is empty the noises are louder so you can hear them. Um, a practical experiment. Fill a bottle with 6-7 beads. Shake it, produces sound. Fill the bottle with beads till the bottle neck, shake. No sound. That is what prolly happening.
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