Biology

NAME: ______________________

Q on Cell Structure – Chapter 1

1. List 3 organelles found in both animal and plant cells.

2. Explain why organelles are normally surrounded by membranes.

3. Name and describe the function of an animal cell organelle which is absent from plant cells.

4. Copy and complete the table below:

|mm |(m |nm |

|1 |1 000 or 1 x 103 |1 000 000 or 1 x 106 |

|0.000 005 or 5 x 10-6 |0.005 or 5 x 10-3 |5 |

| |10 | |

| | |0.5 |

|0.05 | | |

| |0.04 | |

| | |35 |

5. Write down the formula for calculating the magnification of an object.

6. Place the following structures in order of size, smallest first:

average animal cell, average plant cell, average bacterium, pin head, DNA molecule diameter, ribosome.

7. Explain the difference between magnification and resolution.

8. Explain why an electron microscope has a greater ability to resolve fine detail than a light microscope.

9. What is the difference between a scanning electron microscope and a transmission electron microscope?

10. Copy and complete the...