Fundamentals of Biology

Types of Organisms, Cell Composition

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Session Overview

This session will introduce the course and cover the basics of cell composition. It will also introduce the different types of organisms and the basic differences between them. Learning Objectives To understand the differences between eukaryotic and prokaryotic cells. To be familiar with the different levels of organization of life. To be able to describe both the chemical and molecular composition of a cell. To be able to define the basic components of biological macromolecules.

Session Activities

Lecture Video

Watch the lecture video excerpt

• Types of Organisms, Cell Composition, Excerpt 1

Check Yourself

Question 1

Which of the following organisms is a prokaryote?

Amoebas close

Bacteria check

Humans close

Mice close

Yeast close

Check

Question 2

Which is the correct order, from highest to lowest, of the different levels of biological organization?

Ecosystem, Organ, Tissues, Organism, Cells close

Ecosystem, Organism, Organ, Tissues, Cells check

Ecosystem, Tissues, Organ, Cells, Organism close

Organism, Ecosystem, Tissues, Organ, Cells close

Tissues, Ecosystem, Organism, Cells, Organ close

Check

Session Activities

Lecture Video

Watch the lecture video excerpt

• Types of Organisms, Cell Composition, Excerpt 2

Check Yourself

Question 1

Which element is not a common component of biological macromolecules?

Carbon close

Helium check

Hydrogen close

Nitrogen close

Oxygen close

Check

Session Activities

Practice Problems

• Problems (PDF)
• Solutions (PDF)

Further Study

Suggested topics for further study in an introductory-level Biology textbook

• Levels of organization of life
• Biological macromolecules
• Cell composition
• Prokaryotic and eukaryotic cells

Useful Links

• Plant, Animal, and Bacteria Cell Models
• Cell Cams

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