Which organelle is not involved in the synthesis and secretion of a protein from the cell?

The next organelles involved are ribosomes. If the protein is not destined to the cell membrane the mRNA is translated on a cytoplasmic free-floating ribosome. If the protein is to be transported to the cell membrane, it is translated by ribosomes found on the rough endoplasmic reticulum.

Explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.