Why We Need Digestion
Think about it - that sandwich you had for lunch contains massive molecules that are way too big to squeeze through your intestinal walls. Polymers (large molecules) need to be broken down into monomers (small molecules) so they can actually get into your blood and feed your cells.
Your body uses three main types of enzymes to tackle different foods. Amylase breaks down carbohydrates, lipase handles fats, and various peptidases deal with proteins.
Carbohydrate digestion starts with amylase attacking starch. This enzyme is produced in your pancreas, small intestine, and even your salivary glands - that's why bread starts tasting sweet if you chew it long enough! Amylase breaks the bonds in starch to produce maltose.
Quick Tip: Remember that digestion is all about breaking bonds - think of enzymes as molecular scissors cutting up your food!
The final step happens with disaccharidases - special enzymes stuck to the walls of your small intestine. These break down disaccharides like maltose, sucrose, and lactose into simple sugars your body can absorb.
