Question

please answer the following questions

1. which type of stain uses a single basic dye (like methylene blue) to highlight cells against a clear background?

a) negative stain
b) simple stain
c) gram stain
d) acid - fast stain

1. what does negative staining do?

a) stains the organism, leaving background clear
b) stains both organism and background equally
c) stains the background, leaving the organism clear
d) requires heat fixation prior to staining

1. which staining technique helps determine only shape and arrangement but not cell wall composition?

a) simple stain
b) gram stain
c) acid - fast stain
d) negative stain

Explanation:

1. A simple stain uses a single basic dye to highlight cells against a clear background.
2. Negative staining stains the background, leaving the organism clear.
3. A simple stain helps determine only the shape and arrangement of cells, not the cell - wall composition.

Answer:

1. B. Simple stain
2. C. Stains the background, leaving the organism clear
3. A. Simple stain