An important organelle is missing from this image of a eukaryotic cell undergoing protein synthesis. This organelle s not surrou
nded by a membrane but sits in the nucleus. It produces ribosomal subunits from proteins and ribosomal RNA, which is exported into the cell proper. It is key to the process of protein synthesis taking place at ribosomes. What is this organelle? A) centriole B) centrosome C) mitochondria D) nucleolus
The nucleolus is a round body located inside the nucleus of a eukaryotic cell. It is not surrounded by a membrane but sits in the nucleus. The nucleolus makes ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. It then sends the subunits out to the rest of the cell where they combine into complete ribosomes. Ribosomes make proteins; therefore, the nucleolus plays a vital role in making proteins in the cell.
meiosis produces haploid gametes (ova or sperm) that contain one set of 23 chromosomes. when two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes
