Visking Tube - Absorption

What organ is responsible for the majority of the absoption that occurs in the digestive system?

• large intestine

• small intestine

• stomach

• mouth

Absorption is

• the movement of digested food molecules through the wall of the intestine into the blood or lymph.

• A process where larger food particles are crushed into smaller food particles

• A process where larger nutrient molecules are broken into smaller nutrient molecukes

• A process where proteins are broken down into amino acids

The lining of the small intestine is folded which

• Increases surface area of the small intestine

• Allows for slower passage of food molecules into the small intestine.

• Allows for more nutrient absorption.

• All of the above

After 15 minutes, __________ can be found in the distilled water in the beaker

• starch molecules

• glucose molecules

• both starch and glucose molecules

• neither starch and glucose molecules

To confirm the presence of glucose molecules in the distilled water in the beaker, a chemical called ____________ will be used.

• Iodine

• biuret reagent

• Benedict's reagent

____________ is used to test for the presence of starch

• iodine solution

• biuret solution

• starchy solution

• glucose solution

Amylase is an

• amino acid

• enzyme

• protein

• carbohydrate

Amylase breaks

• starch into proteins

• starch into glucose

• starch into fats

Visking tube membrane is

• semi permeable

• fully permeable

• not permeable

If high amount of glucose is present, Benedict's solution turns from blue to

• yellow

• green

• orange/red