Question 1:

Which process involves the physical breakdown of food into smaller pieces?

Explanation: The process that involves the physical breakdown of food into smaller pieces is called "Mechanical Digestion." It includes actions such as chewing, grinding, and churning of food by the teeth, tongue, and muscular movements of the digestive system.

Question 2:

Which process involves the breakdown of complex molecules into simpler substances using enzymes?

Explanation: The process that involves the breakdown of complex molecules into simpler substances using enzymes is called "Chemical Digestion." It occurs in the mouth, stomach, and small intestine, where enzymes break down carbohydrates, proteins, and fats into their respective smaller components.

Question 3:

Which process involves the movement of food through the digestive tract by coordinated muscular contractions?

Explanation: The process that involves the movement of food through the digestive tract by coordinated muscular contractions is called "Peristalsis." It helps propel food forward and aids in mixing and digestion along the way.

Question 4:

Which organ is responsible for the production and secretion of digestive enzymes?

Explanation: The organ responsible for the production and secretion of digestive enzymes is the "Pancreas." It produces and releases enzymes into the small intestine to help break down carbohydrates, proteins, and fats.

Question 5:

Which process involves the uptake of nutrients from the digestive tract into the bloodstream?

Explanation: The process that involves the uptake of nutrients from the digestive tract into the bloodstream is called "Absorption." It occurs primarily in the small intestine, where nutrients are transported across the intestinal wall and into the bloodstream.