Page 63 - MNUmicrobiology practical 2025
P. 63
General Microbiology & Immunology (PM 401) second level Semester 4 2024/2025
In each of the following statement determine whether the statement is TRUE or FALSE
No. Statement Answer
1 The Gram negative bacteria stain with deep violet color
indicates under decolonization.
2 In the Gram stain procedure, the Gram positive bacteria
will take the red color of the counter stain, Safranin.
3 In the Gram stain procedure, alcohol dissolves the lipids
of the cell wall leaves large pores in Gram negative
bacteria rendering it colorless.
4 The cell wall of Gram negative bacteria has low lipid
content than Gram positive bacteria.
You conduct a Gram stain and when you observe the bacterial cells with the
microscope, you observe purple colored cells and pink colored cells mixed
together. What does this tell you?
Answer
General Microbiology & Immunology (PM 401) Practical note Page 52
