Splitting of incident light and then recombining them to observe interference pattern occurs in which type of microscopy?

#Question id: 40411

#Applied Microbiology

Arrange the correct sequence of color changes observed in a Gram-negative bacterium during the Gram staining process at each step:

1. After Crystal Violet

2. After Safranin

3. After Alcohol decolorization

4. After Iodine treatment

#Question id: 40412

#Applied Microbiology

Match the Reagents in List-I with their specific role/function in List-II.

#Question id: 40413

#Applied Microbiology

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): After the washing with alcohol (decolorization step), Gram-positive bacteria retain the purple color, while Gram-negative bacteria become colorless.

Reason (R): Gram-positive bacteria have a thick peptidoglycan layer that traps the Crystal Violet-Iodine complex, whereas Gram-negative bacteria have a high lipid content in their outer membrane which dissolves in alcohol.

#Question id: 40414

#Applied Microbiology

1. Read the following statements regarding the Gram staining technique.
1. 1. Statement I: Heat fixing is done after adding the crystal violet stain to the slide.
2. 1. Statement II: Ideally, the iodine solution (mordant) should be kept on the smear for approximately 1 minute.

#Question id: 40415

#Applied Microbiology

Which of the following errors during the Gram staining procedure would most likely cause a Gram-positive bacterium to appear Gram-negative (pink)?

#Question id: 40416

#Applied Microbiology

In a eukaryotic cell utilizing the glycerol-3-phosphate shuttle, what is the total yield of ATP via oxidative phosphorylation alone from the complete oxidation of 1 molecule of glucose? (Assume 1 NADH = 2.5 ATP and 1 FADH₂ = 1.5 ATP)