Cell Biology: Introduction to Cells

TOPIC 1; SUB-TOPIC 1.1; IB BIOLOGY SLY1

Clarity of the viewed object is known as __.

Resolution

INTERNATIONAL SYSTEM OF UNITS (SI) - used to describe size

• 1 centrimetre (cm) = 1/100 (10^-2) metre

• 1 millimetre (mm) = 1/1000 (10^-3) metre

• 1 micrometer (µm) = 1/100 000 (10^-6) metre

• 1 nanometer (nm) = 1/100 000 000 (10^-9) metre 

• 1 metre = 10² cm= 10³ mm = 10⁶ µm= 10⁹ nm

Decreasing Order of Organisms 1

Cells

Decreasing Order of Organisms 2

Organelles

Decreasing Order of Organisms 3

Bacteria

Decreasing Order of Organisms 4

Viruses

Decreasing Order of Organisms 5

Membrane

Decreasing Order of Organisms 6

Molecules

__  is the ratio of the size of the image to the size of the object.

Magnification

Magnifications can be derived from the microscope eyepiece __.

4x, 10x, 40x, 100x

Images of structures provide __.

magnifications

__ are used to improve the sizing and accuracy of the featured sizes.

Scale bars

actual size can be determined with __.

scale bars