人體化學式消化

 

相關問題:

1. 列出日常食物中，需要消化才能吸收的食物物質，並列出這些食物物質其中兩種主要的食物來源。

需要消化才能吸收的食物物質	主要食物來源
澱粉	飯…
蔗糖
蛋白質
脂肪

2. 脂質(例如膽固醇)並不一定要消化才能吸收的，但日常食物中需要消化的脂肪，一般指的是哪一類?

3. 澱粉於消化道哪一(些)位置會被消化? 會被消化成甚麼? 涉及的酶分別稱為甚麼?

4. 有甚麼原因會導致澱粉於口腔內未被有效進行消化式消化? 試列出其中兩個原因。

5. 如何知道飯內的澱粉於口腔內已被消化成麥芽糖?

6. 為何飯於口腔內停留5分鐘，人會感到甜味?

7. 吃粥(稀飯)，最終會較易吸收內內裡含有的葡萄糖嗎? 試加以解釋。

8. 消化食物這過程，需要消耗能量嗎? 試加以解釋。

9. 日常生活中，以下三類雙糖的主要來源是甚麼?

        (1) 麥芽糖

        (2) 蔗糖

        (3) 乳糖

10. 汽水或果汁是否需要消化才能吸收內裡含有的葡萄糖? 試加以解釋。

11. 葡萄適等飲料內的養料，是否更易被人體吸收? 為甚麼?

12. 蔗糖是於甚麼位置才開始被消化的? 依靠的酶稱為甚麼?

13. 肉類及蛋等在身體甚麼位置才開始被化學式消化?

14. 在胃內，蛋白質會被消化成甚麼食食物物質? 這食物物質形式可以被吸收嗎?

15. 除了胃之外，還有甚麼位置負責消化蛋白質? 這位置消化後的食物物質跟胃有甚麼差異?

16. 最終，蛋白質在甚麼位置才能被完成消化成可吸收的形式? 這過程需要甚麼酶的作用? 這種酶於甚麼構造分泌?

17. 脂質於甚麼位置才開始被化學式消化? 消化後的產物是甚麼?

18. 膽汁可有效加強脂質的化學式消化? 試加以解釋。

19. 膽汁於膽囊釋出，但部分已割除膽囊的人體內仍可釋出少量膽汁。試加以解釋。

20. 如果進食了豬肉飯的話，豬肉飯內不同的成份是如何被消化的?

 

進階問題:

1. 試估計吃飯時同時飲用大量汽水，對消化食物有甚麼影響? 試加以解釋。

2. 已進食的食物物質不一定會被完全消化成可吸收形式的。試舉出其中三項可能的原因。

3. 有甚麼方法可增加消化食物物質的效能? 試舉出其中三種方法。並加以解釋。

4. 如果食物物質未完成消化，那身體會如何處理? (去向是哪裡?)

5. 試估計為何許多草食性動物(例如兔)會進食自己的糞便?

6. 胰管閉塞的話，試估計對人有甚麼影響?

7. 膽管閉塞的話，試估計對人有甚麼影響?

8. 胰管閉塞，除了會影響消化之外，也可能導致胰臟損壞。試估計其原因。(提示: 胰液內含有甚麼物質?)

9. 割除胃部對人有甚麼影響?

10. 割除胃部後，人的飲食應有甚麼改變? 試加以解釋。

11. 根據以上知道的化學消化作用，試提出一些減肥的方法。試舉出其中三項。並加以解釋。

12. 身體虛弱的人，為何應進食一些較易消化或不需要消化的食物?

13. 試舉出其中5種適合身體虛弱的人進食的食物。

 English Version

Related questions:

1. List the food substances in the daily food that need to be digested for absorption, and list two of the main food sources of these food substances.

Food substances	main food sources
starch
sucrose
protein
fat

2. Some lipids (such as cholesterol) do not have to be digested to be absorbed, but what kind of fats in daily food that need to be digested ?

3. Where is starch be firstly digested in the digestive tract? What will it be digested into? What are the enzymes involved?

4. What are the reasons why starch may not effectively be digested in the mouth cavity? Try to list two of the reasons.

5. How to know that the starch in the rice has been digested into maltose in the mouth cavity?

6. Why do people feel sweet when rice stays in the mouth cavity for 5 minutes?

7. After eating porridge , will it be easier to absorb the glucose contained? Try to explain.

8. Does the process of digesting food consume energy? Try to explain.

9. In daily life, what are the main sources of the following three types of disaccharides?

(1) Maltose              (2) Sucrose                    (3) Lactose

10. Does soft drinks or fruit juices require to be digested firstly in order to absorb the glucose contained ? Explain.

11. Are the nutrients in Locozade(葡萄適) more easily absorbed by the body? Why?

12. Where does sucrose begin to be digested? What is the involved enzyme called?

13. Where do meat and eggs begin to be chemically digested in our body?

14. In the stomach, what food substance is protein digested into? Can this food substance form be absorbed?

15. Besides the stomach, what other region in the alimentarhy canal is responsible for digesting protein? What is the difference between the digested food substances in this region and the stomach?

16. Ultimately, where is the complete digestion of the protein into its absorbable form? What enzyme is required for this process? Where is this enzyme secreted?

17. At what region does lipids begin to be chemically digested? What are the products of digestion?

18. Bile can effectively enhance the chemical digestion of lipids. Try to explain.

19. Bile is released in the gallbladder, but a small amount of bile can still be released in some people who have had their gallbladder removed. Try to explain.

20. If pork rice is eaten, how are the different ingredients in the pork rice digested?

Advanced Questions:

1. What is the effect of drinking a lot of soft drinks with a meal on the digestion of food? Try to explain.

2. Ingested food substances are not necessarily fully digested into absorbable form. Give three possible reasons for this.

3. What are the ways to increase the efficiency of digestion of food substances? List three of them and explain it.

4. What happens to the body if the food substances are not digested? (Where does they go?)

5. Try to explain why many herbivores (such as rabbits) eat their own faeces.

6. If the pancreatic duct is blocked, what is the impact on us?

7. If the bile duct is blocked, what is the impact on us?

8. Pancreatic duct blockage, in addition to affecting digestion, may also lead to damage to the pancreas. Try to explain. (Hint: What is in the pancreatic juice?)

9. What is the effect of cutting off the stomach on a person?

10. What changes should be made in a person's diet after the stomach is removed? Try to explain.

11. Based on the above knowledge about chemical digestion, try to propose some methods of losing weight. Try to name three of them. and explain it.

12. Why should people who are physically weak eat some foods that are easier to digest or do not need to be digested?

13. Try to name 5 of these foods that are suitable for sick people to eat.