Multiple choice

Directions: Answer the following question by selecting the most appropriate option.

It has been observed that the process of digestion is faster inside the stomach than outside because

  1. the digestive juices when kept outside the stomach become inactive

  2. food is churned in the stomach thereby increasing the surface area for quicker enzyme action

  3. the digestive juices inside the stomach are acidic, while 'outside they are alkaline

  4. the amount of digestive juices produced in the stomach in the presence of food is much more
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Digestion is faster in the stomach primarily because of mechanical digestion - the churning action breaks food into smaller particles, dramatically increasing surface area for enzyme action. This is why we chew food too. While stomach acidity helps, option B captures the primary mechanical advantage.

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