Winds and wind systems on the Earth. 1  Wind is formed by the flow of air in horizontal directions. In meteorological definitions the coming direction of the wind is called wind direction. 2  1 m/s = 3.60 km/hr = 2.24 mph = 1.94 knot.
The production of proteins involves two major steps: transcription and translation. Together, transcription and translation are known as gene expression. The process of transcription only involves two molecules: DNA and RNA. A DNA strand provides a template for the synthesis of a complementary RNA strand. This process is used to synthesize any type of RNA from a DNA template. Transcription of a gene produces a messenger RNA (mRNA) molecule.
Translation occurs at ribosomes which are made of rRNA (ribosomal) and protein (it seems 3 types of rRNA and about 60-70 proteins are needed; rRNA makes up half the weight). Ribosomes must be assembled from several subunits (which are identified by their density measured in Svedburg units, S).n mammals, ribosomes are composed 4 types of rRNA and around 80 different proteins. In mammalian cells, ribosomal proteins can compose up to 15% of a cellâs total protein and 7-9% of the mRNAs which are made.