Digestion | MCQs

Explanation

The large intestine, also known as the colon, is responsible for:

• Water absorption
• Electrolyte balance
• Fiber fermentation
• Storage and elimination of undigested food (feces)

Explanation

Digestion begins in the mouth, where food is chewed and mixed with saliva that contains enzymes to break down carbohydrates. 

Here's a brief overview of the digestion process:

• Mouth: Food is chewed and mixed with saliva that contains enzymes to break down carbohydrates.
• Esophagus: Food is swallowed and passes through the esophagus into the stomach.
• Stomach: Food is mixed with stomach acid and enzymes to break down proteins and fats.
• Small Intestine: Nutrients are absorbed into the bloodstream.
• Large Intestine: Water and electrolytes are absorbed, and waste is eliminated.

Explanation

• In the mouth, saliva contains the enzyme amylase.
• It starts the chemical digestion of carbohydrates (such as starches and sugars).
• By breaking them down into simpler sugars like maltose and dextrin.

Explanation

• The alimentary canal, also known as the gastrointestinal (GI) tract, is a continuous tube that extends from the mouth to the anus.
• It includes all the organs of the digestive system.

Explanation

• Digestion is the process of breaking down large food particles into smaller particles.
• Such as molecules and ions, that can be absorbed and utilized by the body.

Explanation

• Digestion specifically refers to the process of breaking down food into smaller components.
• Through mechanical and chemical means, allowing the body to absorb and utilize nutrients.

Explanation

• Filtration is a function of the kidneys, which filter waste and excess substances from the blood.
• It is not a digestive function.

Explanation

• The stomach secretes stomach juices, also known as gastric juices, which contain digestive enzymes and acids that break down proteins, carbohydrates, and fats into smaller molecules.
• These juices help to digest food in the stomach.

Explanation

Sloths are a group of arboreal Neotropical xenarthran mammals, constituting the suborder Folivora.