Scale & the Size of Cells

How can we view cells?

microscopes

Why do we need a microscope to see cells?

cells are very small

How are cells measured?

micrometers

What is 1 micrometer equivalent to in mm? In numbers and standard form.

1 micrometer = 0.001mm or 1 x 10

How do you convert from 1 m to mm?

1m = 1000mm

How do you convert from 1 mm to micrometers?

1 mm = 1000 micrometers

How do you convert from 1 micrometer into nanometers?

1 micrometer = 1000 nanometers

Compare the sizes of sub cellular structures in eukaryotic cells vs sub cellular structures in prokaryotic cells

many sub cellular structures in eukaryotic cells are the same size or bigger than prokaryotic cells

How can differences in size be described?

differences in order of magnitude (difference in size calculated by a factor of 10)

How are small or big numbers represented in biology?

Using standard form

What is 1.5 micrometers in mm of standard form?

1.5/1000 =0.0015 1