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Exam (elaborations)
2025-2026 SERIES TCU MICROBIOLOGY LAB EXAM 1 COMPLETE QUESTIONS AND CORRECT ANSWERS | GRADED AND THE LATEST SERIES
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---25January 20252024/2025A+
- Question: elements that all bacteria need 
Ans: carbon, nitrogen, phosphorus, sulfur, oxygen, and hydrogen 
Question: minimal media 
Ans: media that contains exact nutrients needed for growth and nothing extra 
- media is useful b/c we know exactly what's in it, but few organisms are 
resourceful enough to survive with only a few salts and sugars 
Question: complex media 
Ans: - it contains all the nutrients necessary for the microbes 
- aka general purpose media, satisfies the nutritional ...
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Exam (elaborations)
TCU Microbiology Lab Exam 1 Questions and Answers Graded A+
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---32December 20242024/2025A+
- TCU Microbiology Lab Exam 1 
Questions and Answers Graded A+ 
 
What is the term for bacteria that grow best in alkaline conditions? 
Alkaliphiles. 
 
What does a positive urease test indicate? 
The ability of the organism to break down urea into ammonia, raising the pH of the medium. 
 
What is the significance of the blood agar test? 
To differentiate bacteria based on their hemolytic activity (alpha, beta, or gamma hemolysis). 
 
What does a positive citrate utilization test indicate? 
The or...
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