Five BABS1202 students make an error when performing a Gram stain on a sample containing Gram-positive cocci and Gram-negative rods. Each student makes a different error.
When they looked at their slides under the microscope, only one student did not need to repeat the experiment. Which student will this be?

Question

Five BABS1202 students make an error when performing a Gram stain on a sample containing Gram-positive cocci and Gram-negative rods. Each student makes a different error.

When they looked at their slides under the microscope, only one student did not need to repeat the experiment. Which student will this be?

Answer

The student who used safranin instead of carbol fuchsin.

Answer

The student who forgot the alcohol step.

Answer

The student who added alcohol on between the crystal violet and iodine steps.

Answer

The student who forgot the counter stain.

Answer

The student who left the alcohol on for too long.

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Five BABS1202 students make an error when performing a Gram stain on a sample co...

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