primary stain of gram stain is

All are reagents of gram stain Procedure except

Step 1:

Smear stained with

After step 1,how does gram positive and gram negative bacteria appear?

Identify the step 2:

addition of

After step 2,how does gram positive and gram negative bacteria appear?

Function of mordant is

After step 3,how does gram positive and gram negative bacteria appear?

Crucial step in Gram stain is addition of

After step 4,how does gram positive and gram negative bacteria appear?

According to pH theory, gram positive bacteria are

This is a cellwall of

Choose the uses of gram stain(Multiple answers)