​Science PowerPoint Lectures
Science PowerPoint Lecture

Science PowerPoint Lectures

from Science Prof Online

Science Test Questions

Science Prof Online offers free multiple choice and true/false practice test questions on a variety of science topics.

Instructor's Corner
Each was created to supplement real, live high school and college-level introductory science courses.​

Lecture and lab PowerPoint Shows are some of the free resources offered by Science Prof Online, and can be downloaded from the list below. 

Science Prof Online has online classrooms, including: the Virtual Cell Biology Classroom, the Virtual Microbiology Classroom the Virtual Anatomy & Physiology Classroom (currently being developed).  

Science PowerPoint Lectures by Topic

  • Metric System [PPT only or all student materials]
  • Photosynthesis: Light Dependent Reactions [PPT lecture]


For additional course material see the specific Virtual Classroom topic that you are interested in or use one of the search boxes to find exactly what you want. Materials are continually being added to our curriculum. Follow us on Facebook for updates!

Printing Instructions: The best way for students to print out the PowerPoint is to download the PDF version. Select Print, and, when the Print screen comes up, go to the Print Handling options. Under Page Scaling, select "Multiple pages per sheet", Under Pages per sheet, select "2". That uses up less paper, placing two slides on each page.




  • Preparing an Isolation Streak Plate of Bacteria [PPT only]
  • Preparing a Bacterial Smear for Staining [PPT only]

Page last updated: 10/2015
Science Video Library
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"Sit down before fact as a little child, be prepared to give up every conceived notion, follow humbly wherever and whatever abysses nature leads, or you will learn nothing."

 - Thomas Huxley (1825-95)

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Classroom-tested Biology Homework Assignments 
FREE from 

Virtual Biology

You have FREE access to a large collection of materials used in a college-level introductory biology course. The Virtual Biology Classroom provides a wide range of free educational resources including PowerPoint Lectures, Study Guides, Review Questions &  Practice Test Questions.
Hawaiian Ginger Flower
Virtual Cell Biology

You have FREE access to a large collection of materials used in a college-level introductory Cell Biology Course. The Virtual Cell Biology Classroom provides a wide range of FREE educational resources including Power Point Lectures, Study Guides, Review Questions and Practice Test Questions.
Endomembrane System of a Eukaryotic Cell, Mariana Ruiz
Virtual Microbiology

8 week or 
16 week course

The Virtual Microbiology Classrooms provide a wide range of free educational resources including PowerPoint Lectures, Study Guides,  Practice Test Questions, 
Microbiology Images & Videos.
Ermahgerd Microbiology Science

" What am I, Life? A thing of watery salt
Held in cohesion by unresting cells,
Which work they know not why, which never halt,
Myself unwitting where their Master dwells.
I do not bid them, yet they toil, they spin  
A world which uses me as I use them"

 John Masefield 
(1878 – 1967))



What Are the Plants 
Up To?
Get your phyto-nerd on! Check out our biology lecture on the crazy strategies plants use to compete with each other.
Flowering Plant PPT Lecture