# CTE Resource Center - Verso - Medical Laboratory Technology II Task 1314403604

CTE Resource Center - Verso

Virginia’s CTE Resource Center

Describe basic identification techniques used to differentiate bacteria.


Description should include basic techniques used to differentiate bacteria, such as the techniques of
  • Gram stain morphology (differentiates between gram-positive cocci and gram-negative rods)
  • catalase (differentiates between Staphylococcus and Streptococcus)
  • coagulase (differentiates between Staphylococcus aureus and other species of Staphylococcus)
  • indole (differentiates between E. coli and other gram-negative organisms).

Process/Skill Questions

  • How could Gram stain morphology be useful in diagnosing an infection with Staphylococcus vs. E. coli?
  • How is the catalase test useful in differentiating between Staphylococcus and Streptococcus?
  • Which gram-positive cocci is catalase and coagulase positive? Why is this important to know?
  • What is the significance of a positive indole when identifying E. coli vs. other gram-negative rods?

Related Standards of Learning



The student will read, interpret, analyze, and evaluate a variety of nonfiction texts.
  1. Use critical thinking to generate and respond logically to literal, inferential, and evaluative questions about the text(s).
  2. Identify and synthesize resources to make decisions, complete tasks, and solve specific problems.
  3. Analyze multiple texts addressing the same topic to determine how authors reach similar or different conclusions.
  4. Recognize and analyze use of ambiguity, contradiction, paradox, irony, overstatement, and understatement in text.
  5. Analyze false premises claims, counterclaims, and other evidence in persuasive writing.

Other Related Standards

HOSA Competitive Events

Health Science Events


Medical Spelling


Medical Terminology


Health Professions Events


Biomedical Laboratory Science