Nutrition Date: 5/3/2021 1

Home , Intestinal gland

Nutrition Date: 5/3/2021 1. The rice, noodles, sweet potatoes, and potatoes we eat on weekdays are rich in ( ). A. Sugar B. Protein C. Vitamins D. Fats < A > 2. Which group of foods should be eaten by teenagers in the growth and development period? A. Foods contain protein, calcium & phosphorus C. Sweets B. Fats-rich foods D. Cereals 谷类食物 < A > 3. A certain nutrient does not participate in the synthesis of cell in the human body, nor provide energy, & the amount of such nutrient required by the human body is very small, but it has a great effect on the human body. This nutrient is ( ). A. Protein B. Carbohydrate C. Fat D. Vitamin < D > 4. Regarding the energy in food, the following statement is correct? A. Burning method can be used to determine the energy in food B. Every type of nutrients in food contain energy C. The more expensive the food, the more energy it contains D. Energy-free substances are not necessary for the body < A > 5. An adult’s diet is that the body’s total energy intake is less than the body’s total energy consumption, so his body will ( ). A. Remain normal B. Getting fat C. getting thin D. getting taller < C > 6. From the point of view of a balanced diet, the most reasonable breakfast recipes is A. Two slices of bread, a cup of coke B. An egg, a cup of mineral water C. Two eggs, a cup of fresh orange juice D. an egg, a slice of bread, a cup of fresh orange juice < D > 7. The following which are not physically digestion A. Churning C. Tongue stirring B. Peristalsis in stomach & intestines D. Digestion of starch by salivary amylase < D > 8. Which following statement about the stomach is wrong? A. The stomach can grind and stir food B. There are muscle layers in the stomach wall C. The stomach is the largest part of the digestive tract D. The stomach only has the function of storing food < D > 9. Which glands secrete the digestive juice that digests starch in the digestive tract? (1) Salivary glands (2) Gastric gland (3)Liver (4)Intestinal gland (5)Pancreas A. (2), (4), (5) B. (1), (4), (5) C. (3), (4), (5) D. (1), (3), (5) 10. Among the following digestive glands, the digestive juice secreted by the ( ) does not contain digestive enzymes. A. Pancreas B. Liver C. Gastric gland D. Intestinal gland 11. When food passes through the digestive tract, the parts that can chemically digest protein are ( ). A. Oral cavity & oesophagus C. Small intestine & large intestine B. stomach & small intestine D. Stomach & Large intestine 12. Among the following digestive juices, which have a digestive effect on starch, protein and fat? A. Saliva & gastric juice C. Bile & pancreatic juice B. Intestinal juice & pancreatic juice D. Gastric juice & intestinal juice 13. The final substance formed after the digestion of the protein is ( ). A. Glucose B. Amino acid C. Fatty acid D. Glycerol 14. Among the following structural characteristics, the one that has nothing to do with its absorption function is A. The small intestine is about 5~6m long, B. There are many folds and villi on the surface of the small intestine C. There are intestinal glands in the wall of the small intestine, which can secrete intestinal juice D. There are capillaries and lymphatic capillaries in the villi of the small intestine < C > 15. A student eats bread, milk, and eggs for breakfast. Which of the following is correct after these foods enter the stomach for digestion? A. Initial digestion of fat C. Absorb all water B. Initial digestion of protein D. Absorb a lot of glucose

Structure questions: 1. The six major nutrients in food are mainly ______, ______, ______, ______, ______, ______. The ______, ______, ______can provide energy for the human body.

2. Below the table lists the nutrients contained in 100g of soybeans and 100g of milk, as well as the daily required nutrients for adults. Main nutrients Main nutrients Main nutrients Adult’s daily content in 100g of soybeans (g) content in 100g of milk (g) requirement Carbohydrate 18.6 3.4 380.00 Fats 16.0 3.2 80.00 Protein 35.1 3.0 80.00

Calcium 0.19 0.10 0.80 a) If an adult only eats 1000g of soybeans a day, is there any nutrient exceeds his daily requirement? If you only drink 2500g of milk a day, are there nutrients that cannot meet his daily needs? b) Suppose the energy contained in 100g of milk is 272kJ, & the daily energy required for a baby is 3400kJ, how much milk does this baby need to drink every day?

3. Briefly describe the favourable conditions of the small intestine as the main part of digestion and absorption.

4. The table below shows types of enzyme used in digestion. Fill in the missing information. a) Enzymes Substrate Products Maltose glucose erepsin Dipeptide Fat/lipid + b) Explain the role of bile in digestion.

5. a) Name 2 organs in the human digestive system. b)Describe what happens to food as it moves through the human digestive system.

6. a) What does the term biological catalyst mean? b)Describe the role of amylase in humans. Explain why amylase would not break down lipids. c) Amylase has an optimum pH of 7. Describe & explain what would happen to amylase at a pH of 2.