Human Nutrition
159 questions· page 1 of 16
The diagram shows the human digestive system.
Which row shows the functions for the parts labelled in the diagram?
Options
| absorption of water and storage of waste food material | completion of chemical digestion and absorption | |
|---|---|---|
| A | 1 | 3 |
| B | 1 | 4 |
| C | 2 | 3 |
| D | 2 | 4 |
Which substances are involved in the emulsification and digestion of vegetable oil in the digestive system?
Options
| emulsification of vegetable oil | digestion of vegetable oil | |
|---|---|---|
| A | bile | lipase |
| B | hydrochloric acid | lipase |
| C | bile | protease |
| D | hydrochloric acid | protease |
What is not an example of the assimilation of absorbed food molecules?
Options
A the use of amino acids to produce antibodies
B the use of fatty acids to produce lipids
C the use of glucose to produce glycogen
D the use of proteins to produce amino acids
Which nutrient deficiency causes scurvy?
Options
A calcium
B iron
C vitamin C
D vitamin D
A woman went to the doctor with the following symptoms:
- severe joint and leg pain
- swollen and bleeding gums
- skin that bruises easily.
What should the doctor test the woman's blood for?
Options
A the concentration of vitamin C
B the concentration of vitamin D
C the concentration of iron
D the concentration of calcium
Villi and alveoli have certain common features.
What is not a feature of villi and alveoli?
Options
A a rich capillary network
B a single-celled layer of epithelium
C lacteals connected to the lymphatic system
D a very large total surface area
The diagram shows what happens to amino acids in part of the human body.
What describes processes P and Q?
Options
| P | Q | |
|---|---|---|
| A | absorption | assimilation |
| B | absorption | digestion |
| C | digestion | absorption |
| D | digestion | assimilation |
A healthy person eats a meal containing carbohydrates.
Two hours later, which structure will contain a liquid with an increased concentration of glucose?
Options
A colon
B hepatic portal vein
C renal artery
D ureter
The diagram shows some parts of the human digestive system.
Which row identifies the main function of each of the labelled parts?
Options
| P | Q | R | S | |
|---|---|---|---|---|
| A | digestion | absorption | ingestion | egestion |
| B | ingestion | digestion | egestion | absorption |
| C | egestion | digestion | absorption | egestion |
| D | ingestion | digestion | absorption | egestion |
Scientists estimated the areas of the inner surfaces of different regions of a healthy human digestive system.
Which region is the small intestine?
Options
| region | surface area / | |
|---|---|---|
| A | A | 0.25 |
| B | B | 0.75 |
| C | C | 2.00 |
| D | D | 32.00 |