Nutrition in humans (part 1) G3

A scientist has a sample of food and wants to be able to extract amino acids, fatty acids and glycerol from it. Which combination of digestive enzymes should be used?

• amylase and lipase

• lipase and protease

• maltase and lipase

• maltase and protease

The alimentary canal and some associated organs are shown.

What are organs 1, 2 and 3?

• 1: Oesophagus,

  2: colon

  3: ileum

• 1: Oesophagus

  2: ileum

  3: colon

• 1: stomach

  2: colon

  3: ileum

• 1: stomach

  2: ileum

  3: colon

What is the function of the gall bladder?

• absorption of fat

• digestion of fat

• production of bile

• storage of bile

Protein is digested in the alimentary canal. In which organs is the first protease enzyme produced?

• A

• B

• C

• D

In which order do these events occur in human nutrition?

• 1. digestion

  2. ingestion

  3. absorption

  4. assimilation

• 1. digestion

  2. ingestion

  3. assimilation

  4. absorption

• 1. ingestion

  2. digestion

  3. absorption

  4. assimilation

• 1. ingestion

  2. digestion

  3. assimilation

  4. absorption

Protease breaks down protein in the stomach. Which line on the graph shows the effect of pH on this protease?

• A

• B

• C

• D