Acute kidney tubular necrosis is caused when blood cannot reach the tissues and cells of the kidneys due to a blockage or restriction. This causes damage. Acute kidney tubular necrosis is caused when blood cannot reach the tissues and cells of the kidneys due to a blockage or restriction.
Free ribosomes freely float in the cytoplasm of the cell and the membrane-bound ribosomes bind to the nuclear membrane or to the endoplasmic reticulum. Ribosome function is vital for the production of proteins, or polypeptide chains, from the mRNA.
Animal and plant cells have a nucleus, cytoplasm, mitochondria, ribosomes and a cell membrane. Plant cells have chloroplasts for photosynthesis, a vacuole and cell wall. Cell membranes allow certain substances into and out of the cell.ll cell types have ribosomes for making proteins. Most cells contain DNA but bacterial cells do not have a nucleus as the DNA is simply found in the cytoplasm. To see a larger image, click on the picture. This is a diagram of an animal cell.