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Anonymous
Anonymous asked in 科學及數學生物學 · 1 decade ago

(Bio)A few digestion questions

1. Which of your three kinds of teeth would you use to

(a) bite off a piece of celery?

(b) chew some tough meat?

(c) pull off a piece of toffee?

Explain how the shape of each kind of tooth helps you in the given action.

2. (a) Describe the pH of the stomach and small intestine contents during digestion.

(b) Explain what produces these conditions and why they are necessary.

3. Describe how animals with different diets are adapted to the type of food they eat.

4. What techniques of good oral hygiene can you use to promote healthy teeth?

5. (a) How the villi increase the surface area of the small intestine?

(b) Why is this important?

6. What is peristalsis, why is it needed, and how does it work?

7. What is the value of fibre in diet?

8. You have just finished eating a hamburger and a glass of milk. Explain how the foods you have eaten will be digested in your body. Be specific about the organs involved and the secretions they will use.

2 Answers

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  • 1 decade ago
    Favorite Answer

    保良局馬錦明中學 4e rain lee 解答你

    以下意見只供參考:

    同學~工課係自己做嫁

    (a) bite off a piece of celery?

    incisors

    b) chew some tough meat?

    canines

    pull off a piece of toffee

    呢個唔知你係未打錯

    permolars

    Explain how the shape of each kind of tooth helps you in the given action

    thetooth surface is not smooth

    that can tearing the food easily

    ) Describe the pH of the stomach and small intestine contents during digestion.

    stomach ph 2-2.5

    small intestine ph 8

    Explain what produces these conditions and why they are necessary

    gastric juice digest protein into peptide form

    Describe how animals with different diets are adapted to the type of food they eat.

    some animal have some digestion juice torespond  the digest

    由於你係做工課所以唔會答哂你唔明add我msn rain1314520@hotmail.com

    Source(s): 保良局馬錦明中學 4e rain lee
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  • 1 decade ago

    同學, 家課係要自己做架.

    你偶然唔明一條題目, 可以問人, 講明唔明白d咩. 但係成份家課搵人做就太過份啦!

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