Ribosomes 0.0 / 5 ? BiologyCells, tissues and organsGCSEOther Created by: charucoalCreated on: 06-05-20 07:41 What is the size of ribosomes? 20-35 nm 1 of 13 What are the two types of ribosomes? 70S and 80S ribosomes 2 of 13 What are subunits of a 70S ribosome? 30S and 50S subunits 3 of 13 What are subunits of a 80S ribosome? 40S and 60S subunits 4 of 13 Do ribosomes have membranes? No 5 of 13 What are the subunits made up of? rRNA and ribosomal proteins 6 of 13 In which two ways do ribosomes exist? Free ribosomes in the cytosol or attached to the RER 7 of 13 What is the function of ribosomes #1 Site of translation of mRNA into polypeptides 8 of 13 What is the function of ribosomes #2 Contain binding sites for tRNA and mRNA 9 of 13 What is the function of free ribosomes #3 Make proteins that will function within cytosol (e.g. enzymes) 10 of 13 What is the function of bound ribosomes #4 Make proteins that are used to make and repair membranes 11 of 13 What is the function of bound ribosomes #5 Make proteins that are packaged within certain organelles (e.g. lysosomes) 12 of 13 What is the function of bound ribosomes #6 Make proteins that are secreted out of the cell 13 of 13
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