Orders of Magnitude in Biology: A Convenient Way to Express Small and Large Numbers.

The video tutorial explains the concept of orders of magnitude, a method for expressing very small and large numbers using powers of 10. It covers decimal prefixes for both small and large numbers, providing examples such as converting micrograms to grams and gigajoules to joules. The tutorial includes two examples: calculating the magnification needed for a virus image and determining the volume of a plant cell. The video emphasizes the importance of understanding these concepts for biology exams.

What is the order of magnitude difference between 1 millimeter and 1 meter?

• 3 orders of magnitude

• 4 orders of magnitude

• 2 orders of magnitude

• 1 order of magnitude

Which prefix represents a factor of 10^-6?

• Centi

• Nano

• Micro

• Milli

How many joules are in 2.5 gigajoules?

• 2.5 thousand joules

• 2.5 trillion joules

• 2.5 billion joules

• 2.5 million joules

In the magnification example, what is the standard form of 18 nanometers?

• 18 * 10^-9 meters

• 18 * 10^-8 meters

• 1.8 * 10^-9 meters

• 1.8 * 10^-8 meters

What is the magnification required to enlarge a virus from 18 nanometers to 3.6 centimeters?

• 2.0 * 10^8

• 2.0 * 10^5

• 2.0 * 10^6

• 2.0 * 10^7

What is the volume of a cuboid plant cell with dimensions 20, 40, and 60 micrometers in cubic meters?

• 4.8 * 10^-16 cubic meters

• 4.8 * 10^-14 cubic meters

• 4.8 * 10^-15 cubic meters

• 4.8 * 10^-17 cubic meters

Which of the following is the correct conversion for 60 micrometers to meters?

• 6.0 * 10^-7 meters

• 6.0 * 10^-8 meters

• 6.0 * 10^-5 meters

• 6.0 * 10^-6 meters