This is a problem book ideal for studying the basics of biology, containing fundamental questions about cell division and DNA replication. - Title: Lead α Biology Basics - Basic Problems: Chapter 8 Cell Division and the Cell Cycle - Basic Problems: Chapter 9 DNA Replication I purchased this at school, but I haven't used it much, so it's in relatively good condition. There are some notes written only on the pages shown in the second and third photos, but it should be perfectly usable.