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A-Level Biology Revision

The Structure and Life-Cycle of Viruses

In this video, we look at the structure and life-cycle of viruses. First we explore the size of viruses both relative to prokaryotic cells and also in terms of nanometres. We then look at the life-cycle of viruses and how this involves a host cell. We explore the structure of viruses and why scientists do not consider them to be living organisms.