Investigating Cells

By G Davidson


1. If the total magnification of a microscope is 600 times, and the objective lens has a magnification of 30 times, what will be the magnification of the eyepiece lens?

    

2. Contractile vacuoles are found in plant cells only.

    True

    False

3. Which part of a cell controls all the activities which go on in it?

    

4. When using a microscope, you should always begin with the lowest power objective lens.

    True

    False

5. Chloroplasts contain , which is used in photosynthesis.

6. What does cell sap consist of?

    a solution of water and sugars

    a solution of salt and water

    a solution of salts and sugars

7. The difference between plant cells and animal cells is that plant cells have a cell wall, chloroplasts and a cytoplasm, whereas animal cells don't.

    True

    False

8. If the field of vision of a microscope is 2mm, and 40 cells can be seen stretching from one side to the other, what will be the approximate size of each cell?

    0.2mm

    20 microns

    50 microns

    0.5mm

9. The cell wall of plant cells is made of .

10. How many microns are there in 0.57mm

    5700

    570

    57

    5.7