In methyl green-pyronin staining, the rose-colored cytoplasm is due to the abundance of which organelle?

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Multiple Choice

In methyl green-pyronin staining, the rose-colored cytoplasm is due to the abundance of which organelle?

Explanation:
RNA-rich cytoplasm stains rose with pyronin in this stain. The pink/red color reflects RNA, especially ribosomal RNA in ribosomes. Because many ribosomes are on the rough endoplasmic reticulum, cells with abundant rough ER show pronounced rose-colored cytoplasm. Mitochondria and Golgi don’t contribute as much to cytoplasmic RNA, and the nucleus is not cytoplasmic—its staining relates to DNA. So the rose color points to a high amount of rough endoplasmic reticulum.

RNA-rich cytoplasm stains rose with pyronin in this stain. The pink/red color reflects RNA, especially ribosomal RNA in ribosomes. Because many ribosomes are on the rough endoplasmic reticulum, cells with abundant rough ER show pronounced rose-colored cytoplasm. Mitochondria and Golgi don’t contribute as much to cytoplasmic RNA, and the nucleus is not cytoplasmic—its staining relates to DNA. So the rose color points to a high amount of rough endoplasmic reticulum.

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