basic mechanical and chemical digestion

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Which of the following is NOT a function of the digestive system?

A) Ingestion of food and water

B) Mechanical digestion of food

C) Synthesis of hormones (correct)

D) Absorption of digested food and water into the blood and lymph

What role do bile salts play in digestion?

A) Breaking down proteins into amino acids

B) Breaking down carbohydrates into simple sugars

C) Emulsifying fats into smaller droplets (correct)

D) Splitting nucleic acids into nucleotides

Which of the following is an example of chemical digestion?

A) Teeth cutting food

B) Stomach churning food

C) Bile emulsifying fats

D) Enzymes breaking down proteins into amino acids (correct)

List two similarities between mechanical and chemical digestion.

Similarities: Both processes are essential for breaking down food into absorbable forms. Both occur in the digestive system and involve physical or chemical changes to food. Signup and view all the answers

List two differences between chemical and mechanical digestion

Mechanical digestion involves the physical breakdown of food into smaller pieces, while chemical digestion involves breaking down complex molecules into simpler molecules using enzymes. Mechanical digestion occurs primarily in the mouth and stomach, whereas chemical digestion occurs throughout the digestive system, especially in the stomach and small intestine. Signup and view all the answers

People who have had their gall bladder removed are unable to control the release of bile into the small intestine. Predict a consequence of this.

A consequence of this could be difficulty in digesting and absorbing fats, leading to digestive discomfort and possible nutrient deficiencies. This is because bile, which emulsifies fats, is no longer stored and released in a controlled manner, leading to less efficient fat digestion. Signup and view all the answers

The process in which carbohydrate, protein, and fat molecules are broken down into products small enough to be absorbed into the blood and into the cells is called ________.

digestion Signup and view all the answers

Mechanical digestion increases the ________ of food to allow more effective chemical digestion.

surface area Signup and view all the answers

During chemical digestion, carbohydrates are split into , proteins are split into , and lipids are split into .

Answer: monosaccharides, amino acids, fatty acids and glycerol Signup and view all the answers

Enzymes are biological catalysts that increase the rate of a reaction without being ________.

consumed Signup and view all the answers

The ________ releases bile into the small intestine to aid in the emulsification of fats.

gall bladder Signup and view all the answers

define mechanical digestion

The physical breakdown of food into smaller pieces to increase surface area for chemical digestion. Signup and view all the answers

define chemical digestion

The process by which enzymes break down large, complex molecules into smaller, simpler molecules that can be absorbed by the body. Signup and view all the answers

define bile

A digestive fluid produced by the liver and stored in the gall bladder that helps to emulsify fats in the small intestine. Signup and view all the answers

define Enzymes

Biological catalysts that speed up chemical reactions in the body without being consumed in the process. Signup and view all the answers