Question

The pH of stomach acid is about 1.0.

• What effects does this have on digestion?
• What type of nutrients is broken down in the stomach, and what type of reaction is this?

Answer 1

what do you think?
tell me whatever you know about everything your question asks for

Answer 2

why pH is so low?
where does digestion occur?
what happens to food in stomach?

Answer 3

No because the pH is so low, but that digestion are given in three phases that when the pH is lowered and enters the stomach proteins bind hydrogen and this causes the pH to an acid level decreases.

Answer 4

@Somy

Answer 5

hmmm
more like pH is low due to HCl in stomach

Answer 6

gastric acid in other words

Answer 7

gastric acid is secreted to stomach which is why stomach pH is low
so as you eat food
the first thing that happens is, you chew it
some digestion happens in mouth
specifically digestion of carbohydrates
then food is passed down to stomach through esophagus
once food reaches the stomach, stomach now mixes up food (churning) and turning it into a'chyme'
in stomach digestion of proteins by pepsin occurs
but ofc it continues in duodenum

Answer 8

the type of reaction depends on what is getting broken down
if we specifically speak of proteins broken down by pepsin
the reaction would be hydrolysis, because to break the peptide bonds between amino acids in stomach, you need water
its a reverse reaction of making a peptide bond (condensation, removal of water)
but that happens easily due to the conditions in stomach.
i dont know if you have to know this part but i'll tell just in case
Proteins that we intake in our food, and all other proteins have their specific range of pH they can be active at, & to degrade a protein, you need to denature it, and pH is one of the ways of denaturing it. Denaturation means destroying the 3D structure of the protein, essentially by breaking down some important to structure interactions or bonds such as disulfide bonds
as that happens you will end up with a loose protein chain that now can be hydrolized to amino acids
ignore the details if you have not learnt about it
hope it makes sense :)

Answer 9

Thanks you @Somy

Answer 10

no problem :) hope all is clear :)