Bacterial Identification Worksheet
This worksheet covers key concepts and techniques in bacterial identification for Grade 11 Biology students.
Includes
Standards
Topics
Bacterial Identification
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following is the primary stain used in the Gram staining procedure?
Safranin
Crystal Violet
Iodine
Alcohol
2. A bacterium that grows optimally at very high temperatures is known as a:
Mesophile
Psychrophile
Thermophile
Halophile
1. Gram-negative bacteria stain purple after Gram staining.
True
False
2. Biochemical tests are used to analyze metabolic activities of bacteria.
True
False
1. The outermost layer of a bacterial cell, which can be a target for identification, is the .
2. Bacterial identification often begins with isolating a pure culture using the technique.
1. Briefly explain the difference in cell wall structure between Gram-positive and Gram-negative bacteria.
2. Describe one advantage of using molecular methods (e.g., DNA sequencing) for bacterial identification compared to traditional culture-based methods.
Label the following parts of the bacterial cell:
A:
B:
C:
D: