Biochemicals and Gram Positive Organism ID

This course is part of the Basic Microbiology eLearning Series.


This eLearning course familiarizes laboratory professionals with how to read a Gram stain, colonial characteristics, and biochemical tests used to identify Gram positive microorganisms as well as commonly used testing algorithms. The course only covers aerobic microorganisms, those that grow in the presence of oxygen.


At the conclusion of this eLearning, you will be able to:

  • Identify different types of bacterial morphology seen on a Gram stain
  • Identify different types of colonial characteristics
  • Use flowcharts and identification charts to identify some common aerobic Gram positive microorganisms
  • Associate various biochemical tests with their correct applications
  • Interpret the results of biochemical methods
Continuing Education Credits (CEU)

The Centers for Disease Control and Prevention, Division of Laboratory Systems, Laboratory Training and Services Branch, is approved as a provider of continuing education programs in the clinical laboratory sciences by the ASCLS P.A.C.E.® Program. This course is approved for 1.5 contact hours of P.A.C.E. ® credit.

P.A.C.E.® Course Number: 288-020-18

This course has been approved for 1.5 contact hours in the category of Microbiology/Mycology/Parasitology for Florida Laboratory Licensees.

Florida Course Number: 20-541331

More Information

Biochemicals and Gram Positive Organism ID pdf icon[PDF – 257 KB]

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Length of Course

1 Hour

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Credits Offered


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Delivery Method

On-demand eLearning

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Sponsoring Agency


Page last reviewed: February 11, 2019