Question

Which of the following helps in digestion of food ?

• A. Hormone
• B. Digestive juice
• C. Water
• D. Blood

Hint:

Remember the key players in digestion: the main actors are the {enzymes} which are found in the {digestive juices}. Hormones are the directors, and blood is the delivery truck.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Digestion is the complex process of turning the food we eat into nutrients, which the body uses for energy, growth, and cell repair. This involves the mechanical and chemical breakdown of food.
Step 2: Detailed Explanation:
Let's analyze the role of each option:
(B) Digestive juice: This is the primary agent of chemical digestion. Digestive juices (such as saliva, gastric juice, pancreatic juice, and intestinal juice) contain enzymes that break down large food molecules (like carbohydrates, proteins, and fats) into smaller molecules that can be absorbed by the body.
(A) Hormone: Hormones like gastrin and secretin are chemical messengers that regulate the digestive process (e.g., by stimulating the release of digestive juices), but they do not break down food directly.
(C) Water: Water is essential for digestion (e.g., it helps break down soluble fibre and prevents constipation), but it is a medium, not the active agent of chemical breakdown.
(D) Blood: Blood is responsible for transporting the absorbed nutrients from the digestive system to the rest of the body; it does not participate in the digestion process itself.
Step 3: Final Answer:
Digestive juice is what directly helps in the chemical digestion of food.