Question

Consider a person eating a cheeseburger.

List the occurrence of where each part of the cheeseburger is digested:

• Identify mechanical digestion and which structure is doing the mechanical digestion.
• Identify each type of chemical digestion and which enzyme is digesting that particular molecule, which organ the digestion takes place in, and where that particular enzyme is coming from.

Answer 1

mechanical digestion involves physically breaking the food into smaller particles. It starts from the mouth as the food is chewed. an adult has 32 teeth that can chew and grind the food. The tongue is an organ that consists of voluntary muscles that help to move the food in the mouth to make the mechanical digestion efficient. And also mechanical mixing occurs by peristalsis, which is a wave of muscular contraction that moves along the stomach wall.

The chemical digestion involves breaking the food into simpler nutrients, it starts from the mouth as the food mixes with saliva Saliva consist of Lipase (an enzyme that breaks down triglycerides), Amylase(an enzyme that breaks down polysaccharides ) the salivary glands are present in sublingual, submandibular, parotid

Stomach starts the chemical digestion of proteins, the gastric fluids in the stomach consist of about 2 liters of 'HCL (hydrochloride acid ) and Pepin,

after two hours it enters into the duodenum where it mixes with pancreatic juice (trypsin and chymotrypsin ) where the proteins are digested . and bile helps in the absorption of fatty acids then it is pushed to the small intestine where the 95%of the absorption takes place. The rest of the minerals and water are absorbed from the colon.

As the cheeseburger consists of the bun which is a carbohydrate , starts form mouth, and stomach

cheese from mouth and stomach, duodenum. Vegetables from mouth stomach. Beef from small intestine