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BIOLOGY 1414 LAB PRACTICAL STUDY GUIDE FOR 2025-2026 EXAM
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---39agosto 20252025/2026
- BIOLOGY 1414 LAB PRACTICAL STUDY GUIDE FOR EXAM 
 
Q1: What is the purpose of a standard curve in spectrophotometry? 
A: To determine the concentration of unknown samples based on absorbance. 
Q2: What is the function of a blank in spectrophotometry? 
A: To calibrate the spectrophotometer and zero out the absorbance of the solvent. 
Q3: What is the role of a micropipette tip? 
A: Prevents contamination and ensures accurate liquid transfer. 
Q4: What is the difference between a positive and nega...
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