Climate Zones Objectives: 1. Describe Earth's major climate zones. 2. Explain how climate zones are characterized. Notes: According to the three cell convection model of each hemisphere the Earth neatly separates itself into three distinct climate zones; the polar, temperate, and the tropical zones.limate Zones Objectives: 1. Describe Earth's major climate zones. 2. Explain how climate zones are characterized. Notes: According to the three cell convection model of each hemisphere the Earth neatly separates itself into three distinct climate zones; the polar, temperate, and the tropical zones.
The nucleus is a large roundish organelle. It is bounded by a double membrane which has numerous pores. Inside the nucleus are chromosomes and a dark region called a nucleolus which makes ribosomes. (Ribosomes are necessary for protein synthesis.)
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 ribosomeset s review the nucleolus is a round body located inside the nucleus of a eukaryotic cell it s intimately tied to protein production through the process of making ribosomes a larger nucleolus means faster ribosome production more ribosomes mean faster protein production