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小匿 發問於 科學及數學生物學 · 1 十年前

bio5條英文mc..

1)which of the following substances are normally present in plant vacuole?

A)starch,cellulose and oil.

B)water,proteins and fat.

C)water,salts and glucose

D)chlorophyll,water and proteins.

2)if a strip of the onin epidermal peel is stained with iodine solution,which of the following structures of a cell would be deeply stained?

A)nucleus

B)cell wall

C)cytoplasm

D)vacuole

更新:

3)which of the following protects plant cells from mechanical damages?

A)cell membrane

B)cell wall

C)nucleus

D)vacuole

4)in preparing a slide of onion epidermal cells,which of the following is used as a stain?

A)water

B)oil

C)iodine solution

D)glycerol

更新 2:

5)when a specimen is observed under a microscope with a X15 eyepiece and a X40 objective, the total magnification of the image is

A)40times

B)60times

C)400times

D)600times

3 個解答

評分
  • 1 十年前
    最愛解答

    1.) The answer is C. The plant vacuole stores water,salts and glucose, but not the things that will not soluble in water(e.g. fat.). And chlorophyll should be found in chloroplast, and cellulose should be found in cell wall of the plant cells instead

    2.) The answer is A, nucleus.

    3.) The answer is B, cell wall, the cellulose of the cell well is rigid and protect the cells.

    4.) C. Iodine solution

    5.) D. 15x40= 600x

  • 1 十年前

    1)D

    2)A

    3)B

    4)C

    5)D

  • Ricky
    Lv 5
    1 十年前

    1)which of the following substances are normally present in plant vacuole?

    A)starch,cellulose and oil.

    2)if a strip of the onin epidermal peel is stained with iodine solution,which of the following structures of a cell would be deeply stained?

    B)cell wall

    3)which of the following protects plant cells from mechanical damages?

    B)cell wall

    4)in preparing a slide of onion epidermal cells,which of the following is used as a stain?

    D)glycerol

    5)when a specimen is observed under a microscope with a X15 eyepiece and a X40 objective, the total magnification of the image is

    D)600times

    *I am not sure...

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