Chemical v Physical Digestion

What is chemical digestion?

• The process of breaking down food into simpler substances using enzymes.

• The process of absorbing nutrients from food into the bloodstream.

• The process of chewing food into smaller pieces before swallowing.

• The process of cooking food to enhance its flavor.

What is the role of digestion?

• To break down food into smaller pieces.

• To absorb nutrients into the bloodstream.

• To eliminate waste from the body.

• To provide energy for physical activity.

What is the process of ingestion?

• The act of taking food into the body through the mouth.

• The process of digesting food in the stomach.

• The act of excreting waste from the body.

• The absorption of nutrients into the bloodstream.

What is the primary site of nutrient absorption in the digestive system?

• The stomach.

• The small intestine.

• The large intestine.

• The esophagus.

What role do enzymes play in digestion?

• Enzymes slow down the chemical reactions that break down food.

• Enzymes speed up the chemical reactions that break down food.

• Enzymes have no effect on digestion.

• Enzymes convert food into energy without breaking it down.

How does the small intestine engage in chemical digestion?

• By mixing food with enzymes.

• By absorbing nutrients directly into the bloodstream.

• By breaking down food mechanically with muscles.

• By secreting bile to emulsify fats.

What is the significance of bile in digestion?

• Bile helps in the emulsification of fats, aiding in their digestion.

• Bile is responsible for the absorption of carbohydrates.

• Bile neutralizes stomach acid before it enters the intestines.

• Bile acts as a lubricant for the digestive tract.

What is the role of the stomach in digestion?

• The stomach absorbs nutrients directly into the bloodstream.

• The stomach mixes food with digestive juices and begins the process of chemical digestion.

• The stomach stores food until it is ready to be digested.

• The stomach produces bile to help digest fats.

What is excretion in the context of digestion?

• The process of breaking down food into nutrients.

• The removal of indigestible substances from the body.

• The absorption of nutrients into the bloodstream.

• The storage of waste products before elimination.

What process in the digestive system involves the physical breakdown of food into smaller pieces?

• Chemical digestion

• Mechanical digestion

• Absorption

• Ingestion