There are two places that ribosomes usually exist within a eukaryotic cell: suspended in the cytosol and bound to the endoplasmic reticulum. These ribosomes are called free ribosomes and bound ribosomes respectively. In both cases, the ribosomes usually form aggregates called polysomes or polyribosomes during protein synthesis.
The Mountain Anoa is a miniature water buffalo that lives only in Indonesia. They are an endangered species because of hunting for horns and meat, and loss of forest habitat. The Mountain Anoa is found only on the island of Sulawesi and the nearby island of Buton in Indonesia.
SAVING NEW ZEALANDâS RAREST SPECIES. The Antipodes Island Parakeet is endemic to the Antipodes Islands, one of two parrot species found on the islands, and one of only five ground-dwelling parrots in the world. They may live up to 10-years-of-age, but the introduction of mice that compete for food is a threat to their survival on the Antipodes Islands.