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匿名使用者
匿名使用者 發問時間: 科學其他:科學 · 1 0 年前

有關生物化學問題~!!(20點) 重要~!!

解釋名詞

fluid mosaic model

Symporter

Uniporter

Ionophore

Mutidrug resistance gene

Flipase

問答題

1.細胞膜上蛋白質種類有哪兩種?它們各以何種方式(力量)存在膜上?

2.細胞上有四種醣蛋白Intergral protein與細胞間或細胞內外訊息傳遞有關,請簡述其性狀?

(一) Please explain the meaning of terms

1. Gated ion-channel and Serpentine receptor

2. Agonists and Antagonists

3. Restriction point and Reentry point

4. Oncogene and Tumor suppressor gene

5. Necrosis and apoptosis

6. Metabolis: catabolism and anabolism

7. Epinephrine cascade

(二)Please compare the receptor enzyme between plant and mammal in immune response?

(三)Please describe how the protein kinase involve the cell cycle control?

希望各位大大能我解題這些..不容易的問題..謝謝各位大大^^\"

希望能在今天以內答出來~!!

3 個解答

評分
  • 1 0 年前
    最佳解答

    1.fluid mosaic model

    A model that describes the structure of cell membranes. In this model, a flexible layer made of lipid molecules is interspersed with large protein molecules that act as channels through which other molecules enter and leave the cell.

    2.Symporter

    One of three transport system.

    In symport, two subtrates are moved simultaneously in the same direction.

    3.Uniporter

    One of three transport system. Transporters that carry only one substrate.

    4.Ionophore

    Compounds that shuttle ions across membranes.

    5.Mutidrug resistance gene

    6.Flippase

    Flippase facilitates flipflop diffusion, providing a transmembrane path that is much faster than the uncatalyzed movement.

    1.細胞膜上蛋白質種類有哪兩種?它們各以何種方式(力量)存在膜上?

    Integral proteins :

    hydrophobic interaction with membrane lipids.

    Peripheral proteins :

    electrostatic interactions and hydrogen bonding with the hydrophilic domains of integral proteins and with the polar head groups of membrane lipids

    2.細胞上有四種醣蛋白Intergral protein與細胞間或細胞內外訊息傳遞有關,請簡述其性狀?

    Integrins :

    adhesives, and serve as receptors and signal transducers, conveying information across the plasma membrane in both directions.

    Cadherins :

    undergo homophilic interactions wuth identical cadherins in adjacent cell

    Immunoglobulin-like proteins:

    can undergo either homophilic interactions wuth their identical counterparts on another cell or heterophilic interactions with an integrin on a neighboring cell.S

    Selectins :

    have extracellular domains that, in the presence of Ca2+, bind specific polysaccharides on the surface of an adjacent cell.

    同學 其他的答案已經出來了 用msn要吧 -。-

    參考資料: 老師的上課講義 and Answers.com
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  • 1 0 年前

    你速誰? ="= 噓~~

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  • 1 0 年前

    同學你可以再混一點...跑來這邊問問題ㄎ..

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