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.)
Protein synthesis is where RNA comes into a ribosome after copying DNA. There, the RNA's copy gets transformed into a protein when the specific order of amino acids is read. So, in short, ribosomes make all of the cell's proteins, which are needed to do everything in the cell. Ribosomes are first made in the nucleus, but they can be found on the Rough Endoplasmic Reticulum (Rough ER) and freely floating around in the cell's cytoplasm. Ribosomes work with every organelle in the cell due to their making of proteins, which are needed to build everything.